Malicious PDF — malware analysis report

Static analysis result for SHA-256 1baff5832a4f7908…

MALICIOUS

PDF

35.0 KB Created: 2020-11-08 17:44:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a01bd0c7b43ec78c785121b31e1b44d7 SHA-1: 1e976d18b25762ff8bea68c24f7a81b5a7920a28 SHA-256: 1baff5832a4f7908b05f4cf609ff39190d71e7377f5c9fad930c8f091f2b99cb
66 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The ML classifier strongly indicated maliciousness, and the document body contains an embedded URL pointing to 'trafffi.ru'. This URL is likely used to redirect the user to a malicious site for phishing or to download a secondary payload. The presence of multiple external URIs and the suspicious nature of the primary URL suggest a coordinated effort to distribute malware or conduct phishing attacks.

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=despre+seriale+online+marul+interzis+ep+56 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4374540/normal_5f9b22ce1cd4c.pdfIn PDF document text
    • https://mapipuluzobeb.weebly.com/uploads/1/3/1/3/131398440/3401496.pdfIn PDF document text
    • https://retujesa.weebly.com/uploads/1/3/4/5/134529196/8952315.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385415/normal_5fa3f110d0af3.pdfIn PDF document text
    • https://mefemanodi.weebly.com/uploads/1/3/1/4/131454269/e98d0b8113c68.pdfIn PDF document text
    • https://wofexexugov.weebly.com/uploads/1/3/4/3/134318452/7915118.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425909/normal_5fa5a6b665906.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405179/normal_5f9307aca80cb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374203/normal_5f8c3a5d596d2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/71d5b867-7df8-4f01-a5f4-0e01db9f902d/black_ops_4_android_apk_download.pdfIn PDF document text
    • https://tuxabavijig.files.wordpress.com/2020/11/37940387668.pdfIn PDF document text
    • https://pomazevesala.files.wordpress.com/2020/11/1999_viking_pop_up_camper.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/da2734fe-e95c-467a-8ba2-ba11ef262a49/14273232671.pdfIn PDF document text
    • https://vumakatove.files.wordpress.com/2020/11/assetto_corsa_manual_transmission_keyboard.pdfIn PDF document text
    • https://xumalet.files.wordpress.com/2020/11/68369747445.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_off00004927.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4927 5292 bytes
SHA-256: 5d93a2806bb0b8e5afd2bbb3eee032bc0066f9bb5d38b649b7bb3f468a5eeab6
font_01_sfnt_off00005b20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B20 10440 bytes
SHA-256: 58d45fc23391ebbce7b02729bff33228dab14e22670d01984695bdc7029d2917

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