Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd9e0bbb2401a335…

MALICIOUS

PDF

66.5 KB Created: 2021-02-24 22:03:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: e99b584e4d0be4d1d2f8624459440331 SHA-1: 6f8f9ffb06e76f1371df0310100c91df5556f534 SHA-256: fd9e0bbb2401a335a6cb7eb9a6afd40211b1a61d729c8bc7e3d23dd8f4ecf213
146 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://baarspo.ru/award?keyword=aleko+gate+opener+installation PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4369630/normal_5ff347c00b9ca.pdfIn PDF document text
    • http://lamaded.mywebcommunity.org/sex_and_the_city_2008_movie_poster.pdfIn PDF document text
    • http://raxejudesezix.scienceontheweb.net/numowuwo.pdfIn PDF document text
    • http://mobufuwiwid.medianewsonline.com/cub_scouts_uniform_cost.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368246/normal_600757e3cd750.pdfIn PDF document text
    • http://rigoditibalun.mywebcommunity.org/57947858208.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419195/normal_5fdeab9c515d3.pdfIn PDF document text
    • https://cdn.sqhk.co/womawuxinuge/cpiiGly/91413886860.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471992/normal_5fd8d78e2c340.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/wulotugadag/zutireruj.pdfIn PDF document text
    • https://s3.amazonaws.com/guwutivupudutu/adl_barthel_index_form.pdfIn PDF document text
    • https://s3.amazonaws.com/faxaxos/53501779412.pdfIn PDF document text
    • https://s3.amazonaws.com/fapaga/hard_multiplication_worksheets_4th_grade.pdfIn PDF document text
    • http://geforagegi.atwebpages.com/what_base_do_navy_seals_train_at.pdfIn PDF document text
    • http://jabodegodonirad.atwebpages.com/difejerokefusidoxafifid.pdfIn PDF document text
    • https://s3.amazonaws.com/kulinisokakewi/what_do_stock_market_symbols_mean.pdfIn PDF document text
    • https://s3.amazonaws.com/legapatatezisa/ruposusijigekokesisuvos.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_off0000c6d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6D9 5040 bytes
SHA-256: 4a155d7d2afd0ba4b11aae5a75d25e61fc1b3f69b91bec97b6d351247889b794
font_01_sfnt_off0000d812.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD812 10492 bytes
SHA-256: be3f4b51db3c3b184ff99ca782766b90f6cea71e75bc671ddb2ee3272896734d