Malicious PDF — malware analysis report

Static analysis result for SHA-256 86f7cb5df4464823…

MALICIOUS

PDF

109.1 KB Created: 2021-06-26 14:50:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: bbff4d37e83d46082b8afe6933954103 SHA-1: 03bed7a35e8482607d5d2d3c49e6cb2fd919533c SHA-256: 86f7cb5df4464823940faad1d69506954865111847fd28e11f2695e3d0720c37
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by ClamAV as a phishing trojan and by an ML classifier with high confidence. Heuristics indicate it functions as a link farm, with many URLs pointing to compromised WordPress upload directories. These links likely serve as lures to phishing sites or malware downloaders, attempting to exploit users through deceptive content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9965

Heuristics 6

  • 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.
  • 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://purpleleafestatebuyers.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b8ec9f31b1---mabolobomij.pdf In PDF document text
    • https://sidexsideaudio.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c88217a9741---69336722583.pdfIn PDF document text
    • https://howardsteeves.com/wp-content/plugins/super-forms/uploads/php/files/9cbf068196f8f23abd2518a48046da8f/lemepelubitoduwugakofe.pdfIn PDF document text
    • https://expungemyrecordnj.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608e51d5ab07b---zumejasajibesa.pdfIn PDF document text
    • http://riskhedgetech.com/uploaded/file/159700061160af80925e414.pdfIn PDF document text
    • https://brahmagnanam.org/fck_uploads/file/32373520660.pdfIn PDF document text
    • https://www.heainc.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c483346d0c---82132929516.pdfIn PDF document text
    • https://certifiedmoversinc.com/wp-content/plugins/super-forms/uploads/php/files/a1bc0966cc87fafbf6265b0d83d6659c/kajudagitores.pdfIn PDF document text
    • https://www.chauffeur-prive-nice.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160a525958a65b---dixuduwominude.pdfIn PDF document text
    • http://senseoftourism.dk/userfiles/file/58354676857.pdfIn PDF document text
    • http://kemenyseprosiklos.hu/upload/file/61796206895.pdfIn PDF document text
    • http://furkansigorta.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160bb5aec45bad---72959806161.pdfIn PDF document text
    • http://taxicityplus.ru/userfiles/file/lutexe.pdfIn PDF document text
    • https://jennysbooks.com/wp-content/plugins/super-forms/uploads/php/files/8775a83d9f5a3f918ab9a509ab17aede/xanejijanozo.pdfIn PDF document text
    • https://www.enviedecrire.com/wp-content/plugins/formcraft/file-upload/server/content/files/160783f26ac73a---vovumenomi.pdfIn PDF document text
    • http://travellightnepal.com/userfiles/file/20203369045.pdfIn PDF document text
    • http://oguzlarotomatiksanziman.com/depo/sayfaresim/file/41720916933.pdfIn PDF document text
    • https://ballestermultiservicios.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b8977d1e628---61121473916.pdfIn PDF document text
    • https://www.mercato.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1609ae0712cc87---faduvadowudukelogejoro.pdfIn PDF document text
    • https://ckmandarin.com/uploads/69022443999.pdfIn PDF document text
    • http://www.telsercom.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f991d9a2f2---lakuvebudasidimonapekuf.pdfIn PDF document text
    • http://suamayin.biz/userfiles/file/zakaj.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1xuhb7AK25c/uplcv?utm_term=bo3+pack+a+punchPDF 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_off00014b4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14B4A 10252 bytes
SHA-256: e535c02ebfacd6253dd86dd70389532f397c337bee388dc7b398b2339f3c81a0
font_01_sfnt_off00016244.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16244 17300 bytes
SHA-256: 73770b9544a854a188b8f0dbaa2a4b11a183121fa8bf6efdc930e7e4762ca4ba
font_02_sfnt_off00018f5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18F5C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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