Malicious PDF — malware analysis report

Static analysis result for SHA-256 1de7fb312288b7df…

MALICIOUS

PDF

54.9 KB Created: 2020-11-05 21:13:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-11
MD5: e22d4dd04a46824be05b78c3433d1e32 SHA-1: 721ffedc5a07cfbd294aff1bbe9f1d3a4c67cbcd SHA-256: 1de7fb312288b7df0e6cbf689a011f59215096a7c497d207bdf96babeaf6c754
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=1995+boston+whaler+rage+14+impeller+for+sale PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4367937/normal_5f8db5f39c5f8.pdfIn PDF document text
    • https://mefemanodi.weebly.com/uploads/1/3/1/4/131454269/03d3414.pdfIn PDF document text
    • https://narogigadi.weebly.com/uploads/1/3/0/8/130874066/c2099e721b.pdfIn PDF document text
    • https://pejilajapife.weebly.com/uploads/1/3/4/4/134477767/viwadifubawikesude.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375708/normal_5f8b61d27a8c6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369657/normal_5f9f0d7b3f3aa.pdfIn PDF document text
    • https://purowuma.weebly.com/uploads/1/3/4/4/134472698/7752319.pdfIn PDF document text
    • https://xogofodaromaf.weebly.com/uploads/1/3/4/3/134387758/miwopude.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453344/normal_5fa3528328a61.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411503/normal_5f9c9a8e6027f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374703/normal_5f8a737914a3b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365655/normal_5f88f2ffa5920.pdfIn PDF document text
    • https://fotejisatowonu.weebly.com/uploads/1/3/2/3/132302873/307ccad49.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366952/normal_5f877a735082f.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://s3.amazonaws.com/mipeboro/abby_transformer_3._0_pro.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_off00008820.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8820 5660 bytes
SHA-256: ff54a03d48abb7276b7809f2652f11ff5b4f589e206ab4ae557b920b367c41b1
font_01_sfnt_off00009b41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B41 10848 bytes
SHA-256: 1453eb8af66973408b2491d7d6892e7cb17f8f55df5caaaaff165c4911bfa9e9
font_02_sfnt_off0000c01a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC01A 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e