Malicious PDF — malware analysis report

Static analysis result for SHA-256 72b928a59359fde6…

MALICIOUS

PDF

78.8 KB Created: 2021-10-31 15:54:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-28
MD5: f81ca5950b4e6cfbdc36b2c21f31a266 SHA-1: 3314bd3523b72a5e6066b8d4af70b3ad898a2626 SHA-256: 72b928a59359fde69890116ab528933a02592fbcac403e5e68588d5b5cfdcc1c
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://huntic.ru/uplcv?utm_term=in+which+stage+crossing+over+takes+place PDF link annotation
    • https://cutletsmeat.com/wp-content/plugins/formcraft/file-upload/server/content/files/1615d7834cee27---vukilebakajenokiferamij.pdfIn PDF document text
    • http://www.psychophonie-tarbes.com/ckfinder/userfiles/files/82492415706.pdfIn PDF document text
    • http://emilymillerlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/800576385.pdfIn PDF document text
    • http://koppeika.ru/userfiles/file/55120412378.pdfIn PDF document text
    • https://cissud.eu/uploads/ck_editor/files/fevofagudegesadedapawog.pdfIn PDF document text
    • http://fueandhair.com/userfiles/files/tofixamamulikafo.pdfIn PDF document text
    • http://iktoktatas.hu/files/file/folovotutanevimujasofafo.pdfIn PDF document text
    • http://duhochoangthanh.com/upload/files/fowupotafupud.pdfIn PDF document text
    • http://pmrs.ps/userfiles/file/kesujo.pdfIn PDF document text
    • http://veronikavilla.hu/userfiles/file/10921182902.pdfIn PDF document text
    • http://mko-yug.ru/wp-content/plugins/super-forms/uploads/php/files/21e5f03b8f23f5076d9427fd5033e880/63972344602.pdfIn PDF document text
    • http://jrmhandling.nl/upload/file/rivesezugexituripigub.pdfIn PDF document text
    • http://ltptech.vn/uploads/userfiles/file/37045102837.pdfIn PDF document text
    • http://chinahanaro.com/userfiles/file///sexabilogerewigobobiv.pdfIn PDF document text
    • http://harchovyk.com/userfiles/file/lirizadivodebakipit.pdfIn PDF document text
    • http://brlairport.com/images/file/benexuxoguge.pdfIn PDF document text
    • http://blog-lunettes.top-lunettes.com/userfiles/file/41711394243.pdfIn PDF document text
    • https://alhurwallpaper.com/Files/files/kuvurutaposu.pdfIn PDF document text
    • https://tonerihned.cz/userfiles/file/wumexebi.pdfIn PDF document text
    • http://freewest.at/nifitujumomemibowerogomor.pdfIn PDF document text
    • https://rlmahtani.com/userfiles/files/62538388754.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 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_off0000d1eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1EB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000ea02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA02 10848 bytes
SHA-256: 9679b7401c23655ec9c83b2254200bd65c25085fc925ac5e561d894f77c633b0
font_02_sfnt_off00010310.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10310 16676 bytes
SHA-256: 7b202540853395cf1e1955848fe2ddd841303eadc093153c8900ae44144cac76

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