Malicious PDF — malware analysis report

Static analysis result for SHA-256 3dd6f534554ee967…

MALICIOUS

PDF

151.3 KB Created: 2021-12-01 10:50:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-26
MD5: 839c8a8fad7b2bea80c697b7fc4e76e6 SHA-1: 2c3a56d4103d28849e83aa1b9fbbdac4190217f9 SHA-256: 3dd6f534554ee967d58225e03d2c02e93d7607c3ee9c98eba6d133d68876de5d
164 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9575

Heuristics 7

  • 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 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://virtualcharityevents.com/vce_cake/files/files/96815962618.pdf In PDF document text
    • https://www.tahitotfaluovodak.hu/ckfinder/userfiles/files/wodumexanitolumarezup.pdfIn PDF document text
    • http://gps-ambroisie.com/ressource/site-image/files/85563044993.pdfIn PDF document text
    • http://leinerpakgelatine.com/survey/userfiles/files/tebew.pdfIn PDF document text
    • http://herodumpsterrental.com/wp-content/plugins/super-forms/uploads/php/files/a03794665a655453b7a86ab68a013fcc/75805812823.pdfIn PDF document text
    • http://lica-mpt.it/userfiles/files/paxetigeleboleko.pdfIn PDF document text
    • http://hardiebase.com/uploads/assets/filefile/kuzexenuvejiwelupixuk.pdfIn PDF document text
    • https://markiza-trade.ru/admin/ckfinder/userfiles/files/32545888445.pdfIn PDF document text
    • http://reylab.com/userfiles/file/xedoge.pdfIn PDF document text
    • http://www.catalogodecineargentino.com/wp-content/plugins/formcraft/file-upload/server/content/files/161333fb864578---kikimi.pdfIn PDF document text
    • https://onecre.com/images/content/files/joguripokanilavif.pdfIn PDF document text
    • https://makojudo.pl/zdjecia/fck/file/13879073725.pdfIn PDF document text
    • http://krupongs.com/images/file/wolimevemezajobawapa.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1617ffe9532d61---tobotesereba.pdfIn PDF document text
    • https://jbdclothiers.net/emailer/userfiles/file/89087847131.pdfIn PDF document text
    • https://landlorddebtadvisory.com/wp-content/plugins/super-forms/uploads/php/files/15e92e684362733193152e9ac536de41/wiwekofojarikumefex.pdfIn PDF document text
    • https://moolans.com/uploads/files/69257613843.pdfIn PDF document text
    • http://31kouqiang.com/userfiles/file/1636152380.pdfIn PDF document text
    • http://cmoxgermany.com/upimages/file/41069499890.pdfIn PDF document text
    • http://www.santabriganti.org/admin/ckfinder/userfiles/files/83886310636.pdfIn PDF document text
    • http://markasib.ru/ckfinder/userfiles/files/banosek.pdfIn PDF document text
    • http://daieimotors.com/js/upload/files/tawefevadavamumosakiwo.pdfIn PDF document text
    • http://eko-baby.ru/userfiles/file/jitusugefiseg.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Gsjc/~3/BGAemAmcdTc/uplcv?utm_term=inverser+2+coins+rubik%27+s+cube+4x4PDF link annotation
    • 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 PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001ef7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1EF7D 10600 bytes
SHA-256: dfda52793493d45d843cccf3c9b3a3a883088a5cba09167fc2538152102bcb68
font_01_sfnt_off00020804.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x20804 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_02_sfnt_off00021ea3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x21EA3 18680 bytes
SHA-256: da9b77a0ad917f9a3b0f71fecc9b162721ef84cf1697557061d3d8d244f9e397