Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ab4fc38a23c30f4…

MALICIOUS

PDF

71.0 KB Created: 2020-12-29 21:51:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 452327b9ee165ac6ad731785da8cc1cf SHA-1: 2c0ef098781be1a35484d1026f965badf1b907ab SHA-256: 0ab4fc38a23c30f46139233057687352e4d1ac54011932b412514cd96f09a6c1
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains an embedded URI pointing to 'trafffi.ru', which is highly suspicious. The ClamAV detection and ML classifier strongly indicate maliciousness. The document body, though heavily obfuscated, contains text related to a 'Harvard business review subscription', suggesting a phishing lure. No scripts were extracted, but the presence of external URIs and the overall detection profile point to a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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/strik?utm_term=harvard+business+review+subscription+worth+it PDF link annotation
    • https://xemawegomefere.weebly.com/uploads/1/3/4/7/134736207/lirurofotigomul.pdfIn PDF document text
    • https://fuxiwajusefu.weebly.com/uploads/1/3/4/6/134617271/8579902.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490724/normal_5fc3da4ad9b5f.pdfIn PDF document text
    • https://taxufizewafodo.weebly.com/uploads/1/3/4/4/134477277/tuxonudijefogepeb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393761/normal_5fb34ada89f59.pdfIn PDF document text
    • https://tigelulipuneve.weebly.com/uploads/1/3/4/7/134746657/podipelivogafupa.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/9b10a668-4835-4ea6-ba2b-7cb09c9efc0f/comment_changer_les_touches_sur_roblox.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a4e352c-d63e-47d1-8526-904a19942467/zukawofe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d57a9da-ed86-4ba6-b2c2-d68776c339e5/91673737145.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae8e21d2-a3d3-4e0a-99e8-6edd0c61b21e/block_city_wars_apk_mod_7.1.4.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1b4533e3-4c2e-472b-b2ff-2e967b22bfa3/lavarikaj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bb9ab0ef-2e1e-4229-9bf1-cd87bd9d9fb5/bus_and_subway_runner_game_play_online.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d648.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD648 5384 bytes
SHA-256: 4489d3321732657e756e02851bc76f49ff479783b0eee69710ae3a8651ef59a8
font_01_sfnt_off0000e89e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE89E 11136 bytes
SHA-256: e9108a84166132dd3838b010c9fd48512831f36450107ce62d47a8f59eaad1c3

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