Malicious PDF — malware analysis report

Static analysis result for SHA-256 381c45d2c28f69ac…

MALICIOUS

PDF

69.9 KB Created: 2020-12-26 07:58:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: a733ebbd6c2a057ea3ffe4afdbc5b738 SHA-1: b3b80b1ae7d093f836d57873d56d59ebabfac1df SHA-256: 381c45d2c28f69ac4ec6c139c14008914ad901d47a27ffde4233c0485269c674
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://trafftec.ru/strik?utm_term=home+assistant+mdi+icons+list PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4375885/normal_5fa2bf6bd1e71.pdfIn PDF document text
    • https://cdn.sqhk.co/lasesekov/dBMNjjY/skullgirls_fighting_rpg_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/sepufaziru/jjhYhh8/best_deals_on_tvs_near_me.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/vutame/11899030450.pdfIn PDF document text
    • https://s3.amazonaws.com/pisik/61074310506.pdfIn PDF document text
    • https://s3.amazonaws.com/juvosi/ganorisebox.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3558afee-0d41-49ed-b877-8991dcc94583/paint_the_town_red_game_download.pdfIn PDF document text
    • https://s3.amazonaws.com/muvemasoxaji/sitokodijovikewawebixa.pdfIn PDF document text
    • https://s3.amazonaws.com/wazagidonux/76768322967.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d13f4b38-41fc-4f1d-b119-53716fbe63f9/53629883678.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7d8a504f-671e-4a4a-b07e-5d47902b013e/64843875727.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/479a6b6e-78a9-4fdf-8d09-e14b315cc76a/easy_auto_clicker.pdfIn PDF document text
    • https://s3.amazonaws.com/niporofez/vinezisepezubatil.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_off0000d287.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD287 4952 bytes
SHA-256: e5444630ef4da1c80cfb6d25c1b578153aedcd40dcb7ccf8abd9d586fd102687
font_01_sfnt_off0000e345.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE345 12388 bytes
SHA-256: 22a2dda3224cd5ab432deecaf2768e3be7227cb4a230ea6434e50d3f1054aa4d