Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9f36fd059cf3006…

MALICIOUS

PDF

73.5 KB Created: 2021-01-03 21:46:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: e7abdb9657c375f39f3ac33aa6a0465f SHA-1: d14535b00bec4f329d868927d122861735f16ed6 SHA-256: c9f36fd059cf30066f92e27bf229afc02f007220c1cbc9108fea4f4f7a2fee3a
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/123?utm_term=emperor%2527s+new+groove+pacha+son'. The ML classifier also strongly indicated maliciousness. While no scripts were extracted, the presence of a malicious URL within the document structure 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/123?utm_term=emperor%2527s+new+groove+pacha+son In PDF document text
    • https://cdn-cms.f-static.net/uploads/4445337/normal_5fb2b319d05ac.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464068/normal_5fe56a8180777.pdfIn PDF document text
    • https://cdn.sqhk.co/muxizupemof/7tgdDij/68392148053.pdfIn PDF document text
    • https://cdn.sqhk.co/sepetuvab/idGKUjf/juzijeforobekopikos.pdfIn PDF document text
    • https://cdn.sqhk.co/wajidafix/b1ichhi/vesokobok.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382962/normal_5f8ffc43a5453.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391024/normal_5fd9477d87d90.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379229/normal_5fa78d06d1fa3.pdfIn PDF document text
    • https://cdn.sqhk.co/pofaxiniraz/bjjhbAH/fidatovotolimuwiramekinog.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404733/normal_5fdb7737d8225.pdfIn PDF document text
    • https://cdn.sqhk.co/nofatazor/heXo0tB/relebirufufizatelurudefa.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/e1955220-1292-4ff7-83d8-0c2c14d5066e/solera_power_awning_owners_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_off0000e3c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3C5 5456 bytes
SHA-256: 9970bc0238708b48f0c0a2cdceb25ef407ec78f213077685c35aee25a5d674b7
font_01_sfnt_off0000f64d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF64D 10172 bytes
SHA-256: 544208b2c4cb4b65b024f59f148b3994c1c394246f2261c48f3e53f14991daaa

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