Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6adfe0d41cbab0c…

MALICIOUS

PDF

61.2 KB Created: 2021-01-20 11:19:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 930de2859e42d9e8db0f6aad614156e2 SHA-1: 9e7402acccb53f964cd1e198abdd69718b4a0573 SHA-256: f6adfe0d41cbab0cbc13dcd6b9f16ad86cb5e504bf51c89f01a525e9feb68429
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.
  • 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://seumenha.ru/wb?keyword=maps%20for%20mcpe%20download%20apk PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4406208/normal_5fb2e6699819d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373004/normal_5fe3fe3f328e0.pdfIn PDF document text
    • https://nazorilorapumug.weebly.com/uploads/1/3/0/7/130776423/jofufuzijasi.pdfIn PDF document text
    • https://site-1172855.mozfiles.com/files/1172855/34370783667.pdfIn PDF document text
    • https://piwutevuxave.weebly.com/uploads/1/3/4/8/134891910/levim_pinavuwa_wosozidemizalu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412173/normal_5fc57efcb3a12.pdfIn PDF document text
    • https://letotanuvimipe.weebly.com/uploads/1/3/4/5/134598603/nuroxowobaze-rajaluvokulemo-fobamokulubetaz-dafomajipuza.pdfIn PDF document text
    • https://nawexolaka.weebly.com/uploads/1/3/4/7/134704757/fenipuxixuvuxibejam.pdfIn PDF document text
    • https://site-1172255.mozfiles.com/files/1172255/nozosiwufosepatomux.pdfIn PDF document text
    • https://lifitexuga.weebly.com/uploads/1/3/4/3/134356919/33256bdd0b1638.pdfIn PDF document text
    • https://site-1174202.mozfiles.com/files/1174202/michigan_llc_assumed_name_form.pdfIn PDF document text
    • https://site-1166655.mozfiles.com/files/1166655/kufofevujovofilujavul.pdfIn PDF document text
    • https://jotavitot.weebly.com/uploads/1/3/0/7/130738821/a7c005fdf660f00.pdfIn PDF document text
    • https://lidafeli.weebly.com/uploads/1/3/4/6/134683499/68dd985198b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487201/normal_5ffb435ec1fe1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000b454.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB454 5460 bytes
SHA-256: 6a7d9f1b1f475eb06569a22c14acb7940ae4de734a9f458736e823cee3a6028a
font_01_sfnt_off0000c6ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6EF 9652 bytes
SHA-256: 824205962fdf15aa3c8ed2d543e7d2af2300dbb14085f2ef7a03d447bb78efe8

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