Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2494f92cc1a35f2…

MALICIOUS

PDF

93.2 KB Created: 2020-12-09 14:50:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8bfa94c0600177851f7f21c1d1a916ac SHA-1: 1405dad1c145a5fdbaaf883c9a3eedc9257ecdde SHA-256: f2494f92cc1a35f253e5335c7a09e68eee54014123531fcbbfc02f009aeb5ac7
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The embedded URL `https://trafffi.ru/strik?utm_term=warframe+enemy+sense+price` is the primary indicator, suggesting a phishing or credential harvesting attempt. While no scripts were explicitly extracted, the PDF structure and the presence of an external URI heuristic point towards the exploitation of PDF vulnerabilities or social engineering to redirect the user.

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
  • 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://trafffi.ru/strik?utm_term=warframe+enemy+sense+price
    • https://cdn-cms.f-static.net/uploads/4366302/normal_5f9260c79497b.pdf
    • https://cdn-cms.f-static.net/uploads/4390995/normal_5f965573d54d2.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/465629f9-ce01-430b-b8c3-e2437495a5a3/65487368349.pdf
    • https://static1.squarespace.com/static/5fc6ebffabffab30daa8de6c/t/5fcd820df94b6402b231cc39/1607303693967/petabofobaralolol.pdf
    • https://uploads.strikinglycdn.com/files/dfe9b181-e5f5-4426-a7f2-e0d7195af5a8/65528305772.pdf
    • https://s3.amazonaws.com/fasanag/direct_and_indirect_expenses_in_accounting.pdf
    • https://uploads.strikinglycdn.com/files/dbb24a70-8a6a-41be-9e78-8941a3ac5de0/what_to_say_at_a_candlelight_vigil.pdf
    • https://static1.squarespace.com/static/5fc17741e5c7695ca99fa7a5/t/5fc8e3d2b0f45b2a3d30fd05/1607001043435/41128256496.pdf
    • https://uploads.strikinglycdn.com/files/e7f92037-ffd8-44aa-a1a5-f7cc81e4f43e/how_much_does_logisticare_pay_transportation_providers.pdf
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf65af18e72e5fdbcfd0ab/1606378928227/seiko_coutura_kinetic_perpetual_manual.pdf
    • https://static1.squarespace.com/static/5fc2d504084698658e6ae702/t/5fc47624bc819f1cf467ae8e/1606710820403/18327052643.pdf
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbdfa9e2dd96f5918b42619/1606285982881/nukizumotejiwunuri.pdf
    • https://uploads.strikinglycdn.com/files/2bf18d9e-89b6-4d06-b2c8-c119d3ed9795/nokia_tracfone_2003.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012e63.bin
d7ded9c6e611693eb5cf156ac2deb98a95e7d232968da7c403551b1206e2e328
pdf-font-stream PDF embedded font (sfnt) at offset 0x12E63 5244 bytes
font_01_sfnt_off0001403c.bin
2285fc960fb98674cc9c3b2abe966609f32aec1a708efb7cf57b624c90ce7494
pdf-font-stream PDF embedded font (sfnt) at offset 0x1403C 12048 bytes