Malicious PDF — malware analysis report

Static analysis result for SHA-256 36680e954c445bb7…

MALICIOUS

PDF

73.6 KB Created: 2021-01-21 05:26:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4ec7c79c59c267640a70555a98630195 SHA-1: 7404f8b333be3a241c28b64b3826971911960e4f SHA-256: 36680e954c445bb72f320bd8a704f0c632674712d11091fcc70157de666d9c55
104 Risk Score

Malware Insights

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

The file is identified as malicious by a ML classifier and ClamAV with the signature Pdf.Phishing.Trojan. The presence of an external URI pointing to 'traffine.ru' and the heuristic 'SE_DOWNLOAD_BUTTON' suggest a phishing or scam lure. The document body, though heavily obfuscated, contains references to 'Frontier coop catalog' and 'wkhtmltopdf', indicating it's likely a disguised document intended to trick users into downloading a payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://traffine.ru/123?utm_term=frontier+coop+catalog
    • https://cdn-cms.f-static.net/uploads/4418365/normal_5f9a0dc86c415.pdf
    • https://cdn-cms.f-static.net/uploads/4383170/normal_5fc294d31981f.pdf
    • https://cdn.sqhk.co/fetadupozo/gjjg8gc/aesthetic_cute_wallpaper_for_iphone_xr.pdf
    • https://cdn.sqhk.co/suwapipejob/ujiibA5/world_cup_2026_tickets_packages.pdf
    • https://sazagirisama.weebly.com/uploads/1/3/4/5/134585928/womigelebopa.pdf
    • https://mogatuzutixu.weebly.com/uploads/1/3/4/6/134684840/tikowib-tuges-xanomuzogifowat-pakororaludupu.pdf
    • https://static.s123-cdn-static.com/uploads/4415527/normal_60016eaa64bde.pdf
    • https://tajadituzutop.weebly.com/uploads/1/3/1/4/131409135/c26394b32.pdf
    • https://static.s123-cdn-static.com/uploads/4368506/normal_5fe2982522e4a.pdf
    • https://fafafavavilaba.weebly.com/uploads/1/3/4/8/134893162/6806274.pdf
    • https://cdn.sqhk.co/tukawezezo/jaiPjcC/kuneguwudut.pdf
    • https://cdn-cms.f-static.net/uploads/4401994/normal_5fdabd8276871.pdf
    • https://cdn-cms.f-static.net/uploads/4413475/normal_5fada2a18a152.pdf
    • https://cdn.sqhk.co/jomububorava/caPdAid/the_maxwell_apartments_frisco.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/mokamoba/article_35a_of_indian_constitution.pdf
    • https://s3.amazonaws.com/mukut/openfoam_guide_snappyhexmesh.pdf
    • https://s3.amazonaws.com/mikibetiv/esl_my_family_worksheet.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e355.bin
65f1a1901eec5feb29ab01851374d1a507237be6add73575d3f9760e8aac8194
pdf-font-stream PDF embedded font (sfnt) at offset 0xE355 4880 bytes
font_01_sfnt_off0000f401.bin
6d62b500999116e7a6e1b849f2e9698e9d94f5475776688f0f482cb9356b57c8
pdf-font-stream PDF embedded font (sfnt) at offset 0xF401 10916 bytes