Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe916a2251b8e06d…

MALICIOUS

PDF

55.1 KB Created: 2021-01-17 13:04:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 826a06d20e4a1d4b969b5b6d1a445df8 SHA-1: 6cd8a9ec7cf8556bc4f14a2f34f5ee3003c8929f SHA-256: fe916a2251b8e06d134ae1de4a0c7217f33ddde442e81084600496a5c6a80678
152 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://traffmen.ru/aws?utm_term=christmas+songs+violin+sheet+music+pdf'. This URL is presented within the document's body, masquerading as a link to sheet music. The ML classifier also flagged the PDF with a high score, and ClamAV detected it as a phishing trojan. The document body itself is heavily obfuscated and contains metadata indicating it was generated by wkhtmltopdf, suggesting it's not a legitimate document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8828

Heuristics 3

  • 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.
  • 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://traffmen.ru/aws?utm_term=christmas+songs+violin+sheet+music+pdf In PDF document text
    • https://site-1173244.mozfiles.com/files/1173244/suxubebubanutejenuz.pdfIn PDF document text
    • https://site-1179246.mozfiles.com/files/1179246/singing_machine_duet_karaoke_microphones_sam_s.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482854/normal_60009faf3ff3b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393628/normal_5fcfa520c80a2.pdfIn PDF document text
    • https://site-1177351.mozfiles.com/files/1177351/40971275227.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377114/normal_5fdcb13b175a6.pdfIn PDF document text
    • https://site-1166708.mozfiles.com/files/1166708/technical_analysis_by_brian_shannon.pdfIn PDF document text
    • https://site-1172915.mozfiles.com/files/1172915/pixel_car_racer_fastest_tournament_car.pdfIn PDF document text
    • https://site-1215037.mozfiles.com/files/1215037/mediafre_software_for_pc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4428035/normal_600176023d518.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386337/normal_5fe9691d689e1.pdfIn PDF document text
    • https://site-1217406.mozfiles.com/files/1217406/luratujasiripeperedotu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369911/normal_5fa5f6086b570.pdfIn PDF document text
    • http://dudolisimak.epizy.com/29261678929.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/sukaxabuvewapomawujuper.pdfIn PDF document text
    • http://wosolebaxuwutux.rf.gd/samsung_refrigerator_catalogue_2018.pdfIn PDF document text
    • http://gevewodex.epizy.com/wizard_of_oz_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/zeworibuzoza/pafakapuritusola.pdfIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

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