Malicious PDF — malware analysis report

Static analysis result for SHA-256 9510f43d159fd115…

MALICIOUS

PDF

69.6 KB Created: 2020-11-23 16:15:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: d1b7c1b81e92f56d7eb44cf4c2b0fc4a SHA-1: 9c69f7228fe24498fa1ad92fafe8d05dc3c704a0 SHA-256: 9510f43d159fd115884d29d297eb80d1354e5f74eae6db89de108041473f9cdd
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://gettraff.ru/strik?utm_term=easy+jazz+guitar+chords+pdf'. The ML classifier also strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of a malicious URL within the document body strongly suggests an attempt to lure the user to a compromised site, consistent with phishing or malware delivery.

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://gettraff.ru/strik?utm_term=easy+jazz+guitar+chords+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4383915/normal_5f96c44da53e3.pdfIn PDF document text
    • https://mufedagejex.weebly.com/uploads/1/3/4/7/134726032/43a349bf4de6ea5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366009/normal_5f9108e772238.pdfIn PDF document text
    • https://vureduvo.weebly.com/uploads/1/3/4/5/134513064/7517941.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476288/normal_5faa57f8e88a6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410975/normal_5fa683852aa68.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495551/normal_5fb5babf715b1.pdfIn PDF document text
    • https://wajiresejepo.weebly.com/uploads/1/3/0/7/130774962/1842240.pdfIn PDF document text
    • https://gexirirexov.weebly.com/uploads/1/3/0/8/130874239/2304338.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/vesubodufisi/40301702639.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/625eee4a-7f79-4642-991b-4029ae9995c0/69387915777.pdfIn PDF document text
    • https://s3.amazonaws.com/lunojol/51751898222.pdfIn PDF document text
    • https://s3.amazonaws.com/zonivezada/galaxy_s6_edge_charger_port_not_working.pdfIn PDF document text
    • https://s3.amazonaws.com/bulolimepol/61350707472.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_off0000d3cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3CD 5572 bytes
SHA-256: dbf8131bf2415ce99c38dcfd54dfee112ed223b1feb3ba9e63f8357519482e3e
font_01_sfnt_off0000e6d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6D5 10184 bytes
SHA-256: ea10a70f7bbbb59b2daa76fc2a3862106e559cb8180252bbedc13f792c634a33

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