Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee11a7b4da26f832…

MALICIOUS

PDF

47.8 KB Created: 2020-10-30 17:05:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 66d16cd2be90b67bd650c0e3b0735d6c SHA-1: c7ff2f3793ef5d4a51fd2d81b07933f236bd41e0 SHA-256: ee11a7b4da26f83255c11401d9aba3f9805e09e7c33d409049d553cb4225ea33
144 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://ttraff.cc/pify?keyword=show+choir+dresses+images In PDF document text
    • https://xazapadikud.weebly.com/uploads/1/3/1/8/131871762/101601.pdfIn PDF document text
    • https://genamimiwovem.weebly.com/uploads/1/3/1/6/131636881/0f09e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371005/normal_5f91ec7c6c58a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380858/normal_5f8bbe68d2367.pdfIn PDF document text
    • https://vomilanusasapik.weebly.com/uploads/1/3/4/4/134478463/406ebb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368979/normal_5f8ae60b879e7.pdfIn PDF document text
    • https://tuwijojax.weebly.com/uploads/1/3/4/4/134477229/2470146.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384832/normal_5f9572ef13661.pdfIn PDF document text
    • https://fekebejoluxoji.weebly.com/uploads/1/3/4/3/134309121/xawekatasaki-jasam-paxudim.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006c0d.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006c0d.bin)
    • http://www.daltonmaag.com/In extracted file (font_02_sfnt_off0000a49c.bin)
    • https://cdn.shopify.com/s/files/1/0496/6616/2841/files/ditezeguxez.pdfIn PDF document text
    • https://s3.amazonaws.com/tetenifeme/valle_de_la_mort_mto.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/74002132-8761-4dde-9084-ad1150966424/ragalivumutu.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 extracted file (font_00_sfnt_off00006c0d.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C0D 5116 bytes
SHA-256: d8cdcc738f795fcb72739ef22b068315a7a283ddb7e2965414695d3192fca036
font_01_sfnt_off00007d6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D6F 11724 bytes
SHA-256: 3084a05fa9685b95300fda05b7e8de71f1a5be002c2f0e8968b06cb2e2898278
font_02_sfnt_off0000a49c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA49C 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2