Malicious PDF — malware analysis report

Static analysis result for SHA-256 d491963df5603846…

MALICIOUS

PDF

50.6 KB Created: 2021-01-11 13:58:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: b4627c7b8b76eced91142403548724a8 SHA-1: 05030783f614633134b8ab3903b5edd3a7e456ed SHA-256: d491963df5603846500426ca87f6840e86da358f1889a09ac996a6da1d71b862
212 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains numerous embedded links, with one specifically identified as a redirector to malicious infrastructure. The ML classifier and ClamAV detection further support its malicious nature. The presence of embedded links suggests an attempt to direct users to phishing sites or download further malware, aligning with common spearphishing attachment tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7482

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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/aws?utm_term=free++adobe+camera+raw+full+crack In PDF document text
    • https://site-1177153.mozfiles.com/files/1177153/car_loan_calculator_with_tax_and_trade.pdfIn PDF document text
    • https://sowufaxekip.weebly.com/uploads/1/3/2/7/132710719/8722993.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383446/normal_5fe89e461431e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418991/normal_5ff2974f9732b.pdfIn PDF document text
    • https://site-1176882.mozfiles.com/files/1176882/reversionary_life_estate.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419206/normal_5ffc0287c2c90.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369901/normal_5f8846a08e929.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366395/normal_5f87582b267ca.pdfIn PDF document text
    • https://cdn.sqhk.co/tukawezezo/Kifghib/81800466251.pdfIn PDF document text
    • https://site-1177775.mozfiles.com/files/1177775/tonalenergy_chromatic_tuner_and_metronome.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480756/normal_5fcecf48126d1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414486/normal_5f9be802b0675.pdfIn PDF document text

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