Malicious PDF — malware analysis report

Static analysis result for SHA-256 572ef5f8b1e54369…

MALICIOUS

PDF

49.6 KB Created: 2020-11-25 21:14:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fcd25d4802203abe359668e8fa7e81cb SHA-1: 0b802f61646f90f3245dc0502d29774338d03168 SHA-256: 572ef5f8b1e54369afba847eef97101e127f5e9a1e4178551a40b702013adef5
152 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing indicating a malicious redirector link to 'https://gettraff.ru/strik?utm_term=madison+county+telephone+ar'. The ML classifier also flagged the document with high confidence. While no scripts were explicitly extracted, the nature of the redirector suggests an attempt to lure the user to a malicious site, likely for phishing or to download a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9589

Heuristics 3

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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=madison+county+telephone+ar
    • https://cdn-cms.f-static.net/uploads/4366000/normal_5f87067f6b9d6.pdf
    • https://cdn-cms.f-static.net/uploads/4379987/normal_5f9eee1f86a47.pdf
    • https://cdn-cms.f-static.net/uploads/4407994/normal_5f93bd3f9c162.pdf
    • https://cdn-cms.f-static.net/uploads/4404953/normal_5fbdc3f559ce8.pdf
    • https://nonuvatemex.weebly.com/uploads/1/3/4/4/134443968/b6bfa055.pdf
    • https://cdn-cms.f-static.net/uploads/4416664/normal_5f9793f843561.pdf
    • https://mivijupa.weebly.com/uploads/1/3/4/5/134578330/saledazivaz.pdf
    • https://cdn-cms.f-static.net/uploads/4445742/normal_5fb9de637cf3e.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/ec8bff6a-e5ab-4f6f-bbe4-13b0ffd60d83/83606035208.pdf
    • https://uploads.strikinglycdn.com/files/5c1108c5-b9f3-44af-9f74-63d3735003fc/double_integral_calculator_with_steps.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ab29.bin
04320e41f37d362e1c1e3674db81057342abcf13cc114a2b4f167b73d06330ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAB29 5152 bytes

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