Malicious PDF — malware analysis report

Static analysis result for SHA-256 480fa3fe5addda45…

MALICIOUS

PDF

68.1 KB Created: 2021-02-08 09:29:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 69c18282afeef0b2de69fa4174731b28 SHA-1: 9c1a5d2bb74af9f10b5b10fe91591d87b71e2c82 SHA-256: 480fa3fe5addda450e4859f255af736948a36a8fbf996a1f8bd3ec3f690cb929
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://jacksth.ru/aws?utm_term=vtech+phone+manual+cs5129 PDF link annotation
    • https://cdn.sqhk.co/gorokipo/jcWnibK/49703062139.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375885/normal_5fcc6361ea9f9.pdfIn PDF document text
    • http://nuveclovet.xyz/626836508834n3nz.pdfIn PDF document text
    • http://zeropium.com/ascendance_trilogy_book_1ifir6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391903/normal_601a2f29a886b.pdfIn PDF document text
    • http://zinobinipote.22web.org/36657478211.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389616/normal_601aa45cc4d6c.pdfIn PDF document text
    • http://busforpay.online/421825525411v1z1.pdfIn PDF document text
    • http://lovojat.22web.org/las_28_creencias_adventistas_para_nios.pdfIn PDF document text
    • https://cdn.sqhk.co/wopidevepip/ihjcifh/87014156635.pdfIn PDF document text
    • https://cdn.sqhk.co/guledijuxi/1FSXJhg/call_lyft_driver_near_me.pdfIn PDF document text
    • https://cdn.sqhk.co/jasurisunav/giijghd/gevavuzeg.pdfIn PDF document text
    • https://cdn.sqhk.co/kivuwutu/jahgjdx/74042435563.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fobapisarut.epizy.com/xurofotevakolabal.pdfIn PDF document text
    • http://maturar.rf.gd/vobusavolapemasanubezaku.pdfIn PDF document text
    • http://kagiweluxipo.epizy.com/the_bridges_of_madison_county_book.pdfIn PDF document text
    • http://vavijirodujozi.rf.gd/82784003425.pdfIn PDF document text
    • http://mifivanotelo.rf.gd/2982976724.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_off0000cda0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDA0 5504 bytes
SHA-256: c647178cf2e802d83e6fd1ceb04e4e3381c67269c17c2bef4da8dddd1fc6fc23
font_01_sfnt_off0000e03f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE03F 10404 bytes
SHA-256: 958b8a4b11d5ecf4862770c8828cd8cef358e254f97488886aec1f50c80f7f83