Malicious PDF — malware analysis report

Static analysis result for SHA-256 d49756e8cee24dc4…

MALICIOUS

PDF

72.9 KB Created: 2021-01-04 18:28:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: cac3dfb83e54b20dded88ed9d1adfbe3 SHA-1: ee89e659e524be54fd18ea701621165fcb027e53 SHA-256: d49756e8cee24dc4ed66bfe1ed8ee9378a5828ef6ca7b9bc0d07c404a8abb21d
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'trafftec.ru', which is likely the malicious destination. The document body, though heavily obfuscated, suggests a lure related to search results or information retrieval, consistent with phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://trafftec.ru/123?utm_term=black+tailed+gnatcatcher+ebird PDF link annotation
    • https://latifaxegorur.weebly.com/uploads/1/3/5/4/135400737/vigimipapolenokopif.pdfIn PDF document text
    • https://cdn.sqhk.co/puwukuwos/bE0jjgd/75625468594.pdfIn PDF document text
    • https://jajozopikikaju.weebly.com/uploads/1/3/4/3/134359408/7404476.pdfIn PDF document text
    • https://posodagesifip.weebly.com/uploads/1/3/4/8/134874027/2762642.pdfIn PDF document text
    • https://cdn.sqhk.co/vimanagadu/jjkAjah/52723866499.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/b2c27c0a-d2e5-4160-a357-474f3b0fb2ea/29481276343.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bbde1c8c-36c7-4e73-a372-78361851ff6f/jakupomunusufafesul.pdfIn PDF document text
    • https://s3.amazonaws.com/befarekogol/75850881623.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/pezogavefaki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e81c7b87-ff9f-419e-8b4e-44fb7a7b47ac/dr_sears_wellness_institute_reviews.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf5e7177-28bf-43b3-9cbe-c0c7497cab27/nick_jr_computer_games_for_kids.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d8129dd0-4f5e-4905-ad0b-5d31c6ca5dd9/20669315497.pdfIn PDF document text
    • https://s3.amazonaws.com/vabedafozo/fokozabuxadasogexifufikob.pdfIn PDF document text
    • https://s3.amazonaws.com/bejeseja/word_art_fonts_free_download.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_off0000df2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF2E 5276 bytes
SHA-256: 69ec0175b717a500714883904defc5f70125badfae841de4426d7d78bde846b4
font_01_sfnt_off0000f119.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF119 11164 bytes
SHA-256: e14b7736ade2789da7d57d0f065b1e077277bed77de494e6fbf1be1e3c23b503