Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c6862e2dea2b309…

MALICIOUS

PDF

70.0 KB Created: 2021-09-28 21:31:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-06
MD5: 58dfeaa8f1ec78db0085ad3ae3087929 SHA-1: f6e849f7ef01222acdd6909fac7d410022093881 SHA-256: 6c6862e2dea2b30903f52a8158f8bba8961e57fbce01a56a92d909d132b2f2bc
216 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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
  • 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.
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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 https://drahmetbostanci.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613ea5c609ccd---jurixoxuvu.pdf In PDF document text
    • https://sieseam.org/userfiles/files/texexuwasimoloked.pdfIn PDF document text
    • https://mariapolis.net/ckfinder/userfiles/files/19135694743.pdfIn PDF document text
    • https://ketex.com/trcgp/ckfinder/userfiles/files/19089098347.pdfIn PDF document text
    • https://velvetskin.pl/wp-content/plugins/super-forms/uploads/php/files/aaa81e33d10c72ef32276452e72891ba/nomebimolorarasep.pdfIn PDF document text
    • http://tetrafluoro.com/upload/files/pedulagufigemosajotelijin.pdfIn PDF document text
    • https://tonerihned.cz/userfiles/file/76866179657.pdfIn PDF document text
    • http://levakov132.ru/userfiles/file/kefosofokonapudobikesu.pdfIn PDF document text
    • https://olivermilk.vn/tctt/sites/aaa/file/71761901224.pdfIn PDF document text
    • http://kibbkw.com/uploads/files/zefaxutesiwakifimiva.pdfIn PDF document text
    • http://turinhotelcompany.com/userfiles/files/93900351698.pdfIn PDF document text
    • http://maketmaster.ru/admin/ckfinder/userfiles/files/vogamuzemifutiviza.pdfIn PDF document text
    • http://zzlhlt.com/userfiles/file/LianMeng202109250352354171.pdfIn PDF document text
    • http://chaukitchen.com/uploads/files/gewer.pdfIn PDF document text
    • http://140.121.180.103/ckfinder/userfiles/files/zipexumuza.pdfPDF link annotation
    • https://www.hit-education.com/wp-content/plugins/super-forms/uploads/php/files/frj2799d8brhja5e8nca4kpecd/8142694854.pdfIn PDF document text
    • http://productinfo.in/konadnew/userfiles/file/xamukijalevomobuxalo.pdfIn PDF document text
    • http://www.nuricomuvakfi.org/wp-content/plugins/super-forms/uploads/php/files/42gl8k7ig304d9mib8mi19qu66/28160243462.pdfIn PDF document text
    • http://abwmarlboropike.com/uploads/files/31297107182.pdfIn PDF document text
    • http://www.artefuoricentro.it/js/lib/ckfinder/userfiles/files/19319132039.pdfIn PDF document text
    • http://massimosusto.eu/userfiles/files/98338671064.pdfIn PDF document text
    • https://agroadvanced.com/app/webroot/newsletters/editor/files/wutoterakafulepof.pdfIn PDF document text
    • http://sdes.in/uploads/30458361018.pdfIn PDF document text
    • http://arsvet.ru/img/upload/tujabudeta.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/ngfLrbzwjls/uplcv?utm_term=desmume+emulator+for+android+free+downloadPDF 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 extracted file (font_00_sfnt_off0000b28c.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000b28c.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b28c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB28C 14628 bytes
SHA-256: ef06b2c2dc963a8477def8a2b4beee8dc9b982395094861f8b11c00747315b34
font_01_sfnt_off0000d761.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD761 10700 bytes
SHA-256: 76cd0f623f4b6dcdafb29dfa259398431ba60708d4522ae2eadc0c620dcb6387
font_02_sfnt_off0000effa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFFA 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1