Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad3c7de1ce33528f…

MALICIOUS

PDF

36.1 KB Created: 2020-11-09 12:41:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-15
MD5: 1ee2fc82c2de0039a2460e4646154d6a SHA-1: cd800d1c85c63bd5bd3ed5f8830125f6a7e9dfae SHA-256: ad3c7de1ce33528fab598b52cebb796365f6945fd6e9d766a4bae594b4176257
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://traffset.ru/aws?keyword=big+time+rush+theme+lyrics+words PDF link annotation
    • https://waxusebodik.weebly.com/uploads/1/3/4/5/134529962/80bcf2c24.pdfIn PDF document text
    • https://nusoselif.weebly.com/uploads/1/3/4/4/134470887/ed6dd31eda218.pdfIn PDF document text
    • https://bizumoku.weebly.com/uploads/1/3/2/6/132681494/9317098.pdfIn PDF document text
    • https://kuzasafeg.weebly.com/uploads/1/3/4/5/134586407/vitid-pumerisaz-nugimali.pdfIn PDF document text
    • https://lilawowawumoxo.weebly.com/uploads/1/3/1/4/131453384/kosegenonelo-voxovivode-puzarapuroru.pdfIn PDF document text
    • https://pesodubebugi.weebly.com/uploads/1/3/4/2/134234841/2181820.pdfIn PDF document text
    • https://gabopubowiton.weebly.com/uploads/1/3/4/5/134596717/7974012.pdfIn PDF document text
    • https://jonukejunuxesa.weebly.com/uploads/1/3/1/4/131409236/jodizitejup.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/74785c89-71f1-4ff3-a67d-d882cf8a7fe4/52264113023.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5fa95082-9bc0-4ae9-8453-f8ef2e9919b2/mexujipuviregosanom.pdfIn PDF document text
    • https://s3.amazonaws.com/jotizifime/56835898736.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b8be5e04-4d89-40d5-b265-66bce1350b87/gegawosuxusave.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_off0000500c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x500C 5388 bytes
SHA-256: e186527008774050cf5abd286a80596f60883badaebb9b6b070b5cd57ac882a9
font_01_sfnt_off00006253.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6253 9860 bytes
SHA-256: 7474973ac9d1d3ffa3b781d761ebf8a58453acf2296b273db99327929b53bf47

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