Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e56cd5b1a609dd3…

MALICIOUS

PDF

50.0 KB Created: 2020-11-08 05:54:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 51c5bc158ecca42471a4eefa06710d38 SHA-1: 154bd36de8dd85c26f1dd71c70b8690a574449b6 SHA-256: 5e56cd5b1a609dd36497d8652f9f1c27900b49b2ebaf44469fbc6b84770ca1ab
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://trafftec.ru/123?keyword=morality+quotes+in+dorian+gray PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366665/normal_5fa4833143ed5.pdfIn PDF document text
    • https://wuxepufoz.weebly.com/uploads/1/3/4/3/134371519/rugeboserepo.pdfIn PDF document text
    • https://dowezepuxaku.weebly.com/uploads/1/3/4/4/134463959/6137512.pdfIn PDF document text
    • https://fofaxofik.weebly.com/uploads/1/3/4/5/134521529/e151f26d59d0b.pdfIn PDF document text
    • https://nipibodofabujid.weebly.com/uploads/1/3/4/2/134265940/92cc9169d4868.pdfIn PDF document text
    • https://kodowogokilikid.weebly.com/uploads/1/3/4/4/134466607/3097684.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/detew.pdfIn PDF document text
    • https://ditiwudo.weebly.com/uploads/1/3/1/4/131452947/1741394.pdfIn PDF document text
    • https://gikowotezura.weebly.com/uploads/1/3/4/4/134493608/pimukikewigi.pdfIn PDF document text
    • https://firedisivimi.weebly.com/uploads/1/3/0/9/130969818/186bee3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416302/normal_5f9ef04b0aac1.pdfIn PDF document text
    • https://sesizapilutib.weebly.com/uploads/1/3/4/2/134266568/womal-zidopagux-femikula.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
    • 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_off00007614.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7614 5108 bytes
SHA-256: 02e84975256da08aa6febce683e3d7b891270e9a41cd185ef2f8f40d532e8873
font_01_sfnt_off0000877e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x877E 10840 bytes
SHA-256: e72bacc3a56bfcc8ec41f4ae2a6d6e8a63dcf855b63b60fece160e102d9cb49e
font_02_sfnt_off0000aba1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xABA1 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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