Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b3d7fd875b1481d…

MALICIOUS

PDF

49.9 KB Created: 2020-11-07 01:24:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 690a413b9a8d0a3f07164d16cb7c8897 SHA-1: c2235d255eb4d0f438ec6896e48f8542e19e6327 SHA-256: 8b3d7fd875b1481d484997e32f5bfea544e72e7ab7564abe3ee7ee77b95f8e05
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/123?keyword=desi+serials+tv+serial+colours PDF link annotation
    • https://mawoluji.weebly.com/uploads/1/3/4/2/134265904/pusawudurewozo.pdfIn PDF document text
    • https://mipirizu.weebly.com/uploads/1/3/2/6/132682564/6441432.pdfIn PDF document text
    • https://bevugatumuga.weebly.com/uploads/1/3/4/3/134316863/wojetarotixumeliw.pdfIn PDF document text
    • https://vuzaruluweketex.weebly.com/uploads/1/3/4/4/134478477/puvowarowajokog.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/3409757.pdfIn PDF document text
    • https://biwugina.weebly.com/uploads/1/3/1/1/131163984/8202492.pdfIn PDF document text
    • https://xilorufanil.weebly.com/uploads/1/3/0/7/130739938/9435421.pdfIn PDF document text
    • https://lovunekigip.weebly.com/uploads/1/3/4/6/134685916/tuturevosulibox-gafibiwu-suviveni-xamajitinu.pdfIn PDF document text
    • https://mipirizu.weebly.com/uploads/1/3/2/6/132682564/pomilezizolibo_kitarusatibu_seren_loxufagezir.pdfIn PDF document text
    • https://bagolisenavela.weebly.com/uploads/1/3/4/4/134496394/vejipi-zidozok-zukatavi.pdfIn PDF document text
    • https://repotadidutu.weebly.com/uploads/1/3/4/3/134310826/siliwupizosomox.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/gofiguj/30831612953.pdfIn PDF document text
    • https://s3.amazonaws.com/vapelurowar/quit_like_a_millionaire_summary.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_off00008892.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8892 4852 bytes
SHA-256: da112343b902402f02ae724da3a4fae4c3eddbe2fe745a37fa99bee1df7dcb7d
font_01_sfnt_off0000992e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x992E 10216 bytes
SHA-256: 34c53f63eaf8ba362158c93292ab1ae33f04034532a76dd56beacfc9c2f4fd6a