Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2f31eafb05254bd…

MALICIOUS

PDF

71.1 KB Created: 2021-02-28 17:44:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 60b6bfa9c0a19778f7c5139121c51191 SHA-1: bab921db56fe042e8053a37aa2c9b44b4e6e7294 SHA-256: c2f31eafb05254bde25e8e5541b08761b9ad4d1ed27d2bb238f92ae707b36f88
146 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://rujavuxubigiwak.weebly.com/uploads/1/3/4/3/134331492/fikibezenema_pesutowisivi_tupazikagamimod_bisexunifafe.pdf.
  • 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.
  • 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://fokemale.ru/award?keyword=nys+driver%2527s+license+renewal+extension PDF link annotation
    • http://cherrypimp.online/dusudofowokilirumodeyak5.pdfIn PDF document text
    • http://senorifeg.iblogger.org/salesforce_report_login_type.pdfIn PDF document text
    • http://rimka.xyz/44686773089838no.pdfIn PDF document text
    • http://naturapple.space/zeriloraravigexupatumanr0frd.pdfIn PDF document text
    • https://rujavuxubigiwak.weebly.com/uploads/1/3/4/3/134331492/fikibezenema_pesutowisivi_tupazikagamimod_bisexunifafe.pdfIn PDF document text
    • http://wamuvosuvebupa.iblogger.org/cosine_and_sine_rule_worksheet.pdfIn PDF document text
    • http://dresdenpharma.ru/55495850564kq11.pdfIn PDF document text
    • http://vir-tus.com/clear_activity_log_facebook_androidxljyx.pdfIn PDF document text
    • https://cdn.sqhk.co/zogobadakedu/8Vjg21h/kisexaluvinotofujoteko.pdfIn PDF document text
    • http://dudipoviju.22web.org/the_chrysanthemum_throne_eu4_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/lerapuraroke/iLplivR/79218313862.pdfIn PDF document text
    • http://vinnipoh.fun/funny_videos_try_not_to_laugh_impossiblej8xy2.pdfIn PDF document text
    • https://cdn.sqhk.co/vaxarogajib/hhg9Zid/suvarevapunabezi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gegenig.epizy.com/metformin_weight_loss_antipsychotic_induced_weight_gain.pdfIn PDF document text
    • http://savekuf.rf.gd/ligifanawogumurobo.pdfIn PDF document text
    • http://guxasimedoki.epizy.com/filmfare_awards_2018_list.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_off0000d989.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD989 5256 bytes
SHA-256: 5d2fda85baca341db28d2e7def18abd31f9cc7fd28686fb3d131ea4e3504d6e8
font_01_sfnt_off0000eba5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBA5 10368 bytes
SHA-256: 800f4d59d121d81d6133a3fd577b2cd72aec98e4cefbadf4a7ae3a9421fa4d25