Malicious PDF — malware analysis report

Static analysis result for SHA-256 f929b3f47e3326f1…

MALICIOUS

PDF

87.2 KB Created: 2021-06-29 07:36:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: cf5403b2dc18809e82f7ebc9f78b75b9 SHA-1: ef82c5fe447ce5db6a4f0928e1adca26b2e6f2bd SHA-256: f929b3f47e3326f121f862b87014930e8fbf82d9bf4f3adabbea21679b2257f6
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document is classified as malicious by ML models and ClamAV, and exhibits characteristics of an advance-fee scam. It contains numerous links, many pointing to compromised WordPress sites, likely intended to redirect users to malicious content or phishing pages. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to exploit users through deceptive content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://krisoc.ru/uplcv?utm_term=hands+on+history+explorers+pdf PDF link annotation
    • https://tectrongim.com/uploads/files/jomikuzokivikuvep.pdfIn PDF document text
    • https://www.vigo.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1607f1066408a5---94995283692.pdfIn PDF document text
    • http://www.morenoroofing.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b58b529233d---61039829551.pdfIn PDF document text
    • https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/ffd3ddadf9680bd74ae1d47b9c9d8ef8/49429785313.pdfIn PDF document text
    • https://www.higher-energy-trampolineclub.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608eb67da47b3---tisukoxixamerisovugabi.pdfIn PDF document text
    • https://www.formwork.co.uk/wp-content/plugins/super-forms/uploads/php/files/lbi5e3jrgoahu7rsutlgd0k0oo/kemizevijatewepavifef.pdfIn PDF document text
    • http://trainternational.in/wp-content/plugins/formcraft/file-upload/server/content/files/1608550d585e52---24804639548.pdfIn PDF document text
    • https://gradeagroup.com/wp-content/plugins/super-forms/uploads/php/files/gikpvvuuh0uu6420sinm7inaio/75868063330.pdfIn PDF document text
    • http://yasairamenbar.com/uploads/files/71814106411.pdfIn PDF document text
    • https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/160babf0d8b1e0---65678898902.pdfIn PDF document text
    • https://pt2-turbo-j3t.com/contents//files/64486389998.pdfIn PDF document text
    • https://gachbinhduong.com/upload/file/28616909709.pdfIn PDF document text
    • https://www.azembay.com/wp-content/plugins/super-forms/uploads/php/files/pf02537c08j2ade11189j0qboa/34673518522.pdfIn PDF document text
    • http://anhuizhkj.com/upload_fck/file/2021-5-18/20210518175150124797.pdfIn PDF document text
    • https://markzone.az/wp-content/plugins/super-forms/uploads/php/files/a7mdgk05j2gsuj8endlga6dpjd/88135776091.pdfIn PDF document text
    • http://goodtraefarm.com/ckupload/files/nutetanaxesuvidu.pdfIn PDF document text
    • http://kraljicabih.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c9a1d4ca18---18723166398.pdfIn PDF document text
    • http://www.sunargrup.com.tr/wp-content/plugins/super-forms/uploads/php/files/tr7p95bv88jv78uag9d0cdveo5/99592841649.pdfIn PDF document text
    • https://dsodrecital.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e6580b1cc2---30772696722.pdfIn PDF document text
    • http://xn----7sbakif2a3azdub.xn--p1ai/admin/ckfinder/userfiles/files/tolaxunuzexotufiro.pdfIn PDF document text
    • https://alakharia.com/public_html/userfiles/file/10307938944.pdfIn PDF document text
    • http://www.idenet.net/wp-content/plugins/formcraft/file-upload/server/content/files/16086b92654ebd---zixaxagojotokek.pdfIn PDF document text
    • https://rijst.nu/userfiles/file/5648055387.pdfIn PDF document text
    • http://www.dramayaramendes.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606d33df58ef1---medukivi.pdfIn PDF document text
    • https://infravoip.com/wp-content/plugins/super-forms/uploads/php/files/0d4f4be344153e14f4d79ef3ffc904c7/81419573138.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_off0000eeeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEEB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000106fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106FD 18204 bytes
SHA-256: 58231ef378a7dbd4039c9a9487c5e35d2628868ddf42406934d602e722510665
font_02_sfnt_off000136cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x136CD 10804 bytes
SHA-256: e0ff40c7ddde1c90e8222efda74b85dea807c98cd555a55106b9a5df06b78c7f

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