Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac7d2b0510f3a904…

MALICIOUS

PDF

41.7 KB Created: 2020-11-09 07:59:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 2343d49a95c5505f57b2edd62b54ab24 SHA-1: a958dd93ad2fe043c6e81c1e97a2d7ae016099f2 SHA-256: ac7d2b0510f3a90454696bb262fa0f4b456c6d6f689f220d61b5266117878cc2
66 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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://trafffi.ru/123?keyword=idsonix+idd-u3102+manual PDF link annotation
    • https://lakujasoramaw.weebly.com/uploads/1/3/4/4/134400634/67418dc31c5a5f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369914/normal_5fa800899125f.pdfIn PDF document text
    • https://kuwofepex.weebly.com/uploads/1/3/2/7/132740654/zurogo.pdfIn PDF document text
    • https://jiwepurojal.weebly.com/uploads/1/3/0/7/130775762/zeretokexomaxepimop.pdfIn PDF document text
    • https://sewurinibe.weebly.com/uploads/1/3/4/5/134595705/7878c7cb3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413590/normal_5f9d6ee02cb90.pdfIn PDF document text
    • https://jurulabawoviruj.weebly.com/uploads/1/3/4/7/134706537/zodotonibogupa.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/7775416.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://sidulemova.files.wordpress.com/2020/11/13923392722.pdfIn PDF document text
    • https://s3.amazonaws.com/zidosozawok/mafurumekatarawezopunefa.pdfIn PDF document text
    • https://votepox.files.wordpress.com/2020/11/87091840234.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_off00006299.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6299 5400 bytes
SHA-256: 7c298254987df74da31fa5ea60bb0b723162e6dcbe4daa0f16d4b7e97be048dc
font_01_sfnt_off000074f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74F5 10960 bytes
SHA-256: 9379d52f237eac65ab6c0b6308b9a4e90bf34309fba88131e79fb0409d4f8dae

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