Malicious PDF — malware analysis report

Static analysis result for SHA-256 0cad2286471e4ec4…

MALICIOUS

PDF

43.3 KB Created: 2020-11-07 14:09:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: fd5e65305e0bd0332f7730dfdb568f02 SHA-1: 97e98d5aab173e495beb46106c4f6c9832581b5b SHA-256: 0cad2286471e4ec445ae869206557dfedee04163b09a563685c7378f9ba2cc69
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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://trafficel.ru/123?keyword=start+typing+on+word+document PDF link annotation
    • https://pudisipilusive.weebly.com/uploads/1/3/4/5/134597375/4fec58634f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425487/normal_5fa2484b6a16c.pdfIn PDF document text
    • https://debasomi.weebly.com/uploads/1/3/0/7/130739769/xoxiwoxuzav.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366316/normal_5f90a9570be3e.pdfIn PDF document text
    • https://fenibelamej.weebly.com/uploads/1/3/4/4/134464240/3434242.pdfIn PDF document text
    • https://lifotuvuzaraxur.weebly.com/uploads/1/3/0/7/130775275/bdd65fc028e30.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409623/normal_5f94791af3829.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/e3582f6c-9264-4069-a33e-334123ddec4c/meruxorigumewo.pdfIn PDF document text
    • https://devegukow.files.wordpress.com/2020/11/4236770437.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fb78acbf-479e-44e4-8045-5c6d6745a35e/play_home_illusion.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e234b631-f245-4337-bbc1-4a2d22e9ee24/9026695815.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/17e380ac-f085-45a5-82fa-8c28783bea8c/wozugowi.pdfIn PDF document text
    • https://xukurupaja.files.wordpress.com/2020/11/witness_to_grace_john_goodenough.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005d6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D6D 5364 bytes
SHA-256: 31cded07332565cf2ea9875da80c0d08b4ee083a8a2468f90dfb02d83d66d340
font_01_sfnt_off00006f98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F98 10240 bytes
SHA-256: 7c80a9f3059272e16affb8ece2474d8505b8565071ba221ee9470c661554ac96
font_02_sfnt_off0000928d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x928D 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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