Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6ebd3c0f5ec1869…

MALICIOUS

PDF

134.8 KB Created: 2022-02-28 17:52:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-17
MD5: 25900d16a62a87fdc9a059ee84d9fc02 SHA-1: 62e15b20142a0fb0ca072dcd6a71096a2bc12730 SHA-256: b6ebd3c0f5ec1869421654b19cc2f49c2c4efba5efcbbdb50640d738d7c67589
236 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9480

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • Clickable PDF combines external action with parser-evasion structure high PDF_ACTION_PARSER_EVASION
    PDF has an external clickable URI together with object graph or xref structures that make parsers disagree, such as divergent duplicate objects, parser divergence, or xref offset mismatch. That combination is stronger than a plain link: the document is both an outward-action carrier and a parser-confusion/evasion sample.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://limpiasol.com/wp-content/plugins/formcraft/file-upload/server/content/files/16201e4a43eece---3181033548.pdf In PDF document text
    • https://krantiservice.com/ckfinder/userfiles/files/20417144636.pdfIn PDF document text
    • https://consurs.ro/ckfinder/userfiles/files/71259470524.pdfIn PDF document text
    • http://ekonomiyonetimivepazararastirmalarikongresi.reklam.cc/FCKeditor/editor/filemanager/connectors/userfiles/file/81039088951.pdfIn PDF document text
    • http://integrotech.pl/zdjecia/file/40381339732.pdfIn PDF document text
    • https://liguecasa.mmsfoot.com/stock/file/vosanixagasedo.pdfIn PDF document text
    • http://dlabiura.kbo.pl/ckfinder/userfiles/files/nojigebeweresigoravo.pdfIn PDF document text
    • http://wellcomm.co.id/assets/kcfinder/upload/files/98794678512.pdfIn PDF document text
    • http://igigeothermal.jp/userfiles/file/sifeduginonulujebumeko.pdfIn PDF document text
    • http://coffeexclusive.com/kcfinder/upload/files/xopaxolij.pdfIn PDF document text
    • https://www.ttmagazin.com/assets/admin/js/plugins/kcfinder/upload/files/wunefodoxota.pdfIn PDF document text
    • https://202x231x229x35.3gokushi.jp/uploads/files/94858375539.pdfIn PDF document text
    • https://grdr.org/paidel/ckfinder/userfiles/files/48698434514.pdfIn PDF document text
    • https://stellabakingcompany.com/wp-content/plugins/formcraft/file-upload/server/content/files/1621762f0e3823---zobibapanabiwulagum.pdfIn PDF document text
    • http://paykaaluminiya.ru/ckfinder/userfiles/files/nikojogadirefojiji.pdfIn PDF document text
    • http://wuyioutdoor.com/userfiles/file/jezafaxubudelogutomokika.pdfIn PDF document text
    • http://espwireless.net/uploads/file/1980983266.pdfIn PDF document text
    • https://www.bevillelecomte.ovh/ckfinder/userfiles/files/20448632499.pdfIn PDF document text
    • https://www.mercedesbenzofaustinservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/162123b386a638---xibojafujexuripudojined.pdfIn PDF document text
    • http://metabolizmusonline.hu/images/upload/file/posegaratufarene.pdfIn PDF document text
    • http://lab4050.com/upload/editor/file/novodomobozosubonig.pdfIn PDF document text
    • http://dostavka.markasib.ru/ckfinder/userfiles/files/wuzujur.pdfIn PDF document text
    • http://www.garriagricola.com/wp-content/plugins/formcraft/file-upload/server/content/files/16215696c1bfee---60006347216.pdfIn PDF document text
    • https://soudureornementalelauziere.com/upload/editor/file/govux.pdfIn PDF document text
    • http://dsfly.com/uploads/files/89235247849.pdfIn PDF document text
    • http://preiss.at/upload_files/files/nudoxadu.pdfIn PDF document text
    • http://vlajkylevne.cz/UserFiles/File/83714508503.pdfIn PDF document text
    • http://www.chinahkcarplate.com/wp-content/plugins/formcraft/file-upload/server/content/files/1620aa6e474699---47257919159.pdfIn PDF document text
    • https://humantouchtranslations.com/wp-content/plugins/formcraft/file-upload/server/content/files/1/16203032fe95ee---muxalovegikugamivaba.pdfIn PDF document text
    • http://amis-simserhof.fr/kcfinder/upload/files/20244686391.pdfIn PDF document text
    • https://educhina.mn/editor/files/xuwizoweferi.pdfIn PDF document text
    • https://protravelnetwork.com/akram/know_news/admin/userfiles/file/sudoduzivota.pdfIn PDF document text
    • https://aimtronu.org/userfiles/file/dizazizuvatobadokabo.pdfIn PDF document text
    • https://emergent-partners.com/wp-content/plugins/formcraft/file-upload/server/content/files/162104f759da1b---12888432565.pdfIn PDF document text
    • http://bretagne.annuaire-regional.com/ckfinder/userfiles/files/72441313442.pdfIn PDF document text
    • https://gk-termopanel.ru/wp-content/plugins/super-forms/uploads/php/files/0bacbb66d2bf64ee38f7af5924e24451/misitiwefowirezususijaz.pdfIn PDF document text
    • http://pnl.ac.id/asset/kcfinder/upload/files/69115469364.pdfIn PDF document text
    • https://wiercenie-studni24.pl/files/files/44273243743.pdfIn PDF document text
    • http://www.thaiboat.net/image/upload/File/zujavixelewude.pdfIn PDF document text
    • https://familienbilstrup.dk/userfiles/file/tonitumatasamakiri.pdfIn PDF document text
    • https://mifuj.co.za/XSRYdR1H?utm_term=soundcloud+er+320+bitratePDF link annotation
    • http://www.medical-psychology.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1621bf624e97f9---wadixeba.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn extracted file (font_00_sfnt_off0001a879.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0001a879.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001a879.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A879 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off0001bf94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1BF94 19944 bytes
SHA-256: 334052393da57528303fa7b398706a972bfa7c1232a0154e940da7e9526cfac6
font_02_sfnt_off0001f340.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1F340 10924 bytes
SHA-256: 28f74e91e187b4fa1ee3261d4e9f537025e5877d5fef986f016c8a7a0f61e6bd