Malicious PDF — malware analysis report

Static analysis result for SHA-256 7496ce89cfb69747…

MALICIOUS

PDF

75.9 KB Created: 2021-02-24 02:23:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: ef0664156874fc3f9c54443a85d282fa SHA-1: 74dd18c04b97a8409faf4ba3fc42ad1f359af4e4 SHA-256: 7496ce89cfb69747c5d7605c257a4e068ab1bc2383661f8ed94f6695983eacd8
154 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://maypoin.ru/123?utm_term=what+is+the+best+payday+loan+for+bad+credit PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4495843/normal_6007a28d57ca5.pdfIn PDF document text
    • http://olipaka.xyz/ruwexiwewudolh2vtw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415052/normal_5fd78231cf143.pdfIn PDF document text
    • http://barbanapoli.moscow/hepatitis_a_treatment_guidelinespoueo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374953/normal_6013a158d01d8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387939/normal_6009858ca1ada.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460048/normal_5ffdb52826699.pdfIn PDF document text
    • http://daating19.site/manual_istorie8lxbs.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366639/normal_5ff9817e42200.pdfIn PDF document text
    • http://idealslimitalia-oficial.site/590656569412gns3.pdfIn PDF document text
    • http://maddot.space/pasoselolunewigine2cr2r.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446633/normal_60260fbf6265a.pdfIn PDF document text
    • http://mmuuue.space/tiktok_mashup_september_2020_newv3ymw.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/zafirawit/rodefomafuxafinapasabir.pdfIn PDF document text
    • https://s3.amazonaws.com/bisapovepizaj/gukivusom.pdfIn PDF document text
    • https://s3.amazonaws.com/werowibovezoje/avon_anew_age_transforming_foundation_review.pdfIn PDF document text
    • https://s3.amazonaws.com/wexukufedepim/abnormal_psychology_in_a_changing_world_11th_edition.pdfIn PDF document text
    • http://gedamodeges.epizy.com/comptia_cloud_study_guide.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_off0000ec41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC41 5496 bytes
SHA-256: 36e83eeee773f69c76c31907ebf80d499153324a33505cf1b4f8ac4256bb3e90
font_01_sfnt_off0000ff00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF00 10484 bytes
SHA-256: 24863e553f5f948ff065369125bd5b3a115613f4b040f82b38636160b22cff27