Malicious PDF — malware analysis report

Static analysis result for SHA-256 41ebdc2deeb3fcac…

MALICIOUS

PDF

73.6 KB Created: 2021-02-13 09:21:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 3aac9ab6a8945f0acfab09f4b57a0f36 SHA-1: 1a1c39d267e8b96875a2eb91ad0c5cff3fe30d08 SHA-256: 41ebdc2deeb3fcac084715ba899940df47ec578b60441c14d2953ec4ef377e07
154 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://leonvi.ru/aws?utm_term=contact+list+template+word+free PDF link annotation
    • https://nefovevetovuj.weebly.com/uploads/1/3/5/3/135390951/9298770.pdfIn PDF document text
    • http://myshoes.moscow/sap_eclipse_oxygeneo4tf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478670/normal_601922d9d763e.pdfIn PDF document text
    • https://cdn.sqhk.co/sativomofij/jb5a0ar/7309173191.pdfIn PDF document text
    • https://cdn.sqhk.co/sotatixorawi/gCigSx3/seguzavirimavosatobolop.pdfIn PDF document text
    • http://jobs-ingenieur.best/12068906793w2p9f.pdfIn PDF document text
    • https://cdn.sqhk.co/sevafeluba/ihjZjh8/war_of_kings_omnibus_reprint.pdfIn PDF document text
    • https://fogolaliri.weebly.com/uploads/1/3/2/8/132814342/4cf91ee2.pdfIn PDF document text
    • http://epipog.com/ahs_portfolio_formatoszoda2.pdfIn PDF document text
    • https://gesogakit.weebly.com/uploads/1/3/4/5/134581759/xasukabodem.pdfIn PDF document text
    • https://cdn.sqhk.co/wowasuperan/dHFgcjj/piano_tiles_3_hack_mod_apk_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453550/normal_5fd6296b219a1.pdfIn PDF document text
    • http://lalat.space/copper_scrap_prices_near_me00p5d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jojitagifuva/sixefimotuwo.pdfIn PDF document text
    • https://s3.amazonaws.com/posufij/19566147359.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e315.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE315 5296 bytes
SHA-256: 449fc94eb01a540d70ebb642e63ac22e74ac85a92b6f2032f1755ce9c485b80a
font_01_sfnt_off0000f50d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF50D 10708 bytes
SHA-256: 8394fb08311d42590a53125b54a5c7455b43b52b188af32c5ea9309323578ea3

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