Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7cda60a09afb23b…

MALICIOUS

PDF

77.6 KB Created: 2020-12-30 14:11:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: f3a4680cc8f024923e974a5c22f6a95d SHA-1: eb896466553bb4e79d1daa1938adce81e7b55102 SHA-256: a7cda60a09afb23be362f14d93e97a9c8a58fa9466b22f2a604160f5d1712da6
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://traffmen.ru/123?utm_term=six+secret+teachings+book+pdf'. This indicates the document is designed to lure users to a potentially harmful website. The ML classifier also strongly flagged this PDF as malicious, supporting the phishing or malware distribution intent.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://traffmen.ru/123?utm_term=six+secret+teachings+book+pdf In PDF document text
    • https://cdn.sqhk.co/wotutovebo/TihISjf/76324088872.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462730/normal_5fd3410a06b86.pdfIn PDF document text
    • https://cdn.sqhk.co/goluxewimabu/Vzvjgxs/gezemer.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427504/normal_5fabd3daae421.pdfIn PDF document text
    • https://cdn.sqhk.co/juzogimuju/ighjdhd/text_ascii_art_generator_facebook.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/jufowokedunod/90453447254.pdfIn PDF document text
    • https://s3.amazonaws.com/bakoloj/jusuxapata.pdfIn PDF document text
    • https://s3.amazonaws.com/donukadizolin/unikey_moi_nhat_win_7.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9f9d0205-16ac-4eca-9a05-c07dfacd61d6/jowodetujose.pdfIn PDF document text
    • https://s3.amazonaws.com/wozowuledij/banshee_full_movie.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7078219a-efef-40bf-bccb-5f26a491a2bd/parewotamivivasax.pdfIn PDF document text
    • https://s3.amazonaws.com/sepawi/honeywell_thermostat_rth2300b_manual.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_off0000eded.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDED 5760 bytes
SHA-256: 1ff20e468c3dc3cf33de424a07a0002ee52ade31bb13ff14bcc2f94da8a3ab31
font_01_sfnt_off00010184.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10184 12236 bytes
SHA-256: 90882d8990767913319d89a5860623d9d9ed78cb6534663789358fde2f5f693e