Malicious PDF — malware analysis report

Static analysis result for SHA-256 dbdfd038bccb6adc…

MALICIOUS

PDF

43.6 KB Created: 2020-11-07 00:08:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: cc8199831af60b332b26c0fc9a82500b SHA-1: 4dcb4a405a73a5de324330d2e7f4fb161caf17af SHA-256: dbdfd038bccb6adc08c28aa656f6db83f2d1aa75a9aa01dcf1a19c40983a2cda
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://trafffi.ru/aws?keyword=idle+apocalypse+hacked PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4422894/normal_5f9c86b2d7f36.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411682/normal_5f97bcd6d99bf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4394072/normal_5f995d29c26cb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414677/normal_5f953ad7d00af.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367656/normal_5f8f857c29645.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417325/normal_5f9cefbad44d0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://larubive.files.wordpress.com/2020/11/latest_incoterms_2018.pdfIn PDF document text
    • https://manetomimexa.files.wordpress.com/2020/11/68091325827.pdfIn PDF document text
    • https://tilokas.files.wordpress.com/2020/11/ford_340b_tractor_manual.pdfIn PDF document text
    • https://lawovuti.files.wordpress.com/2020/11/32943918251.pdfIn PDF document text
    • https://pifakimep.files.wordpress.com/2020/11/fododuxuxinoni.pdfIn PDF document text
    • https://navisemuzezo.files.wordpress.com/2020/11/82992784847.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9ca05e7-d53b-40e5-b8f8-9dbfd034af03/weradogokozobagokikuvas.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_off00006d27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D27 5168 bytes
SHA-256: ce54502541e8eddf8851e20a6ccaac53c4daf48116bd0391f2af06a62f523a8f
font_01_sfnt_off00007ec4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EC4 10256 bytes
SHA-256: 786f129acabffdbc8c58b94ebc1e3657b4a2a5f9faee3267f2187c6785e15107