Malicious PDF — malware analysis report

Static analysis result for SHA-256 74a97a272a0df0f5…

MALICIOUS

PDF

102.3 KB Created: 2021-03-14 22:06:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 75b40595298f90f77e791002dfb72723 SHA-1: 7158719980e980558017fb4820d442ce7dc1e5d1 SHA-256: 74a97a272a0df0f57dab0f4cf7d2d7400f9b276f2c0c49dd31b18075ae8d80f3
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains multiple embedded URLs, one of which is directly referenced by a PDF_URI heuristic, suggesting an attempt to redirect the user to a malicious site. The document body, though heavily obfuscated, appears to be a lure related to a project PDF, aligning with phishing or malware distribution tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://maypoin.ru/award?keyword=automatic+gear+shifting+mechanism+project+pdf
    • http://qiwi-wallet.online/2454692156vew07.pdf
    • http://austritkfa.com/dowexajeremabutaf8l0nb.pdf
    • http://sifaritube.sportsontheweb.net/lekosifewokano.pdf
    • https://cdn-cms.f-static.net/uploads/4367923/normal_60199ffc97ce1.pdf
    • http://claire-irk.ru/siworugesodifumlqugw.pdf
    • https://xuwudivalef.weebly.com/uploads/1/3/4/8/134889087/2526310.pdf
    • https://cdn-cms.f-static.net/uploads/4374178/normal_604627f70270d.pdf
    • https://static.s123-cdn-static.com/uploads/4373782/normal_6007465fb1f93.pdf
    • http://123dutch.com/text_animation_after_effects_free0uzq0.pdf
    • http://vaxisezawoged.scienceontheweb.net/rational_functions_and_asymptotes.pdf
    • https://risegexof.weebly.com/uploads/1/3/4/6/134661868/bijilaxod_miwibivupobejoz_tekidu_wodew.pdf
    • http://testersairf.xyz/60967934911ediya.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/92cb29b4-5ae1-4e5c-bbaf-6f9a4b659386/zetidugu.pdf
    • https://uploads.strikinglycdn.com/files/7e159871-9333-4ef0-a1f3-aced4b7c8d98/what_is_todays_julian_date.pdf
    • https://uploads.strikinglycdn.com/files/8fbc9159-eed7-47e5-9d43-6ebb6e6e22ef/construction_site_audit_report_template_2020.pdf
    • https://uploads.strikinglycdn.com/files/73683f6b-22f6-4bde-9f32-650494c941cd/fisher_price_deluxe_auto_rockn_play_sleeper_recall.pdf
    • http://nowimirozox.atwebpages.com/is_general_dynamics_stock_a_buy.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_off000152b7.bin
8b9c473099eaf3effb9b5c11ad0968c5d073d098f832ab3e59e736cadefa4607
pdf-font-stream PDF embedded font (sfnt) at offset 0x152B7 5600 bytes
font_01_sfnt_off0001659d.bin
ceee2d8e21978d1c2c638a978276f89f99c18a05bf8db1820827b27c5a2e9c2c
pdf-font-stream PDF embedded font (sfnt) at offset 0x1659D 11268 bytes