Malicious PDF — malware analysis report

Static analysis result for SHA-256 0fa578d5c3de6e2f…

MALICIOUS

PDF

87.1 KB Created: 2021-09-07 15:13:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 79a15f732782f5d94a28c16dae357175 SHA-1: 0ee8e67b1815e72cd5713f4f21d950507aa6cd3a SHA-256: 0fa578d5c3de6e2f6097c7ea9401337008525e88f10b54c5529b25c269927c32
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was detected as malicious by ClamAV and flagged by an ML classifier. Heuristics indicate it functions as a link farm, with many URLs pointing to compromised CMS uploads or disposable hosting, likely to host phishing content. The 'SE_ADVANCE_FEE_SCAM_LURE' heuristic strongly suggests the document's content is designed to trick users into providing personal information for a fake prize or parcel delivery, a common advance-fee fraud tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://pitneyclan.com/clients/c/c7/c7afcfad87c307b096642b2e35f52d25/File/87252325746.pdf In PDF document text
    • https://weinquartier.at/wp-content/plugins/super-forms/uploads/php/files/b36ed5a76141763b1f3174ffa532a838/jipurexepusu.pdfIn PDF document text
    • http://ipvoicenj.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071bb0e50ffb---denotepujivesuvulijab.pdfIn PDF document text
    • http://allasclub.com/campannas/file/30013090597.pdfIn PDF document text
    • http://www.sparkprototypes.com/wp-content/plugins/formcraft/file-upload/server/content/files/16088bf1a85b60---19996747311.pdfIn PDF document text
    • http://sanitaerprofi.ch/fckeditor/editor/images/file/85826532694.pdfIn PDF document text
    • https://dakhoathienhoa.net/images/files/57121497158.pdfIn PDF document text
    • http://www.etoiles-recrutement.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ddc00a0080d---53638260288.pdfIn PDF document text
    • http://lbs.ac.at/wp-content/plugins/super-forms/uploads/php/files/c4e5a2jfoocgl7h3h1bnhnodbf/45585197268.pdfIn PDF document text
    • https://actor-conseil.com/files/file/61368887778.pdfIn PDF document text
    • https://signika.pl/Upload/file/52874228725.pdfIn PDF document text
    • https://mithermomix.com.mx/wp-content/plugins/super-forms/uploads/php/files/c1500c1bdbcd94121310074659a01c1e/71565864467.pdfIn PDF document text
    • https://renebeumer.nl/userfiles/file/28334747501.pdfIn PDF document text
    • https://maturana.cl/upload/file/2044437547.pdfIn PDF document text
    • https://yucekalipmakina.com/tsrm1/img/userfiles/file/11339280133.pdfIn PDF document text
    • http://steclotildehorton.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16071b5e3e9e30---78713931534.pdfIn PDF document text
    • https://www.adelaarenergy.com/wp-content/plugins/super-forms/uploads/php/files/qnl5i49b1rl0qmgkn3pkoldcfu/vaxotix.pdfIn PDF document text
    • http://www.atrium-tuiles.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9c1f4e65e6---sosedemebujemenoxo.pdfIn PDF document text
    • https://lakecountyoralsurgery.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c87f4878819---88344777093.pdfIn PDF document text
    • https://www.acptechnologies.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c1e983be299---mawid.pdfIn PDF document text
    • http://orikon.net/Images_upload/files/76880194883.pdfIn PDF document text
    • https://www.ideaklinik.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/16118cfbf4fda0---39563881732.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=gene+and+chromosome+mutation+worksheet+answer+keyPDF 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_off0000eded.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDED 18124 bytes
SHA-256: ac825417049ba6b856cfc533c987a6289d4a35c00e26e15e03cf400b93dbfc1c
font_01_sfnt_off00011cde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CDE 11020 bytes
SHA-256: 42ac91b92999414252946cdfcd3a4e55bfe24aaa275e3a8d83954cf3c81d8767
font_02_sfnt_off00013665.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13665 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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