Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2997267698a6106…

MALICIOUS

PDF

70.3 KB Created: 2020-11-25 00:23:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 215693ee2149ffb4276a81cc3b59d30c SHA-1: 1e5a86ce916ab0c4ee04b485f1a15cb0d04f844a SHA-256: d2997267698a61063d4c814257b7ca748c1fce8524dfa90991717b9c7f7a499f
154 Risk Score

Malware Insights

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

The PDF was flagged by multiple heuristics, including a critical alert for malicious redirector links and a high ML score, indicating malicious intent. The embedded URL `https://traffking.ru/strik?utm_term=ccna+7+chapter+8+exam+answers` is identified as a malicious redirector. Although no scripts were explicitly extracted, the PDF structure and the nature of the redirector suggest it's part of a phishing or malware distribution chain, likely initiated via spearphishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://traffking.ru/strik?utm_term=ccna+7+chapter+8+exam+answers In PDF document text
    • https://cdn-cms.f-static.net/uploads/4500667/normal_5fbc8f433ce9d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468261/normal_5fbd67c9600dd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454438/normal_5fbd83dee3b92.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377388/normal_5f8f007177567.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409255/normal_5f9b9b7776b6e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425492/normal_5f9ca29ad620a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386363/normal_5fa5fb063846b.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/dowavelaxam/62591868378.pdfIn PDF document text
    • https://s3.amazonaws.com/roware/tiny_battleground_mod_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8ca4f943-2a9d-47c4-9495-25147c8b29b4/jinarafuxopoma.pdfIn PDF document text
    • https://s3.amazonaws.com/xebuvuwov/the_fix_tv_guide_wide_bay.pdfIn PDF document text
    • https://s3.amazonaws.com/regegozumekoza/nikola_tesla_movie_netflix.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_off0000d6fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6FD 5480 bytes
SHA-256: a4aa474bd98cc3b98c53985b4f1c3b0d3054facbfe64d25178eb6515fde700a2
font_01_sfnt_off0000e991.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE991 10424 bytes
SHA-256: 79a221cc3608f347e06e8303c4c00e130001e5482f00c47ab8db6c47414b3ec6

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