Malicious PDF — malware analysis report

Static analysis result for SHA-256 469c4daf8236bd40…

MALICIOUS

PDF

65.9 KB Created: 2020-12-29 22:44:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 44ee7408067af660901cfffaded18f50 SHA-1: 5d71951766793d842f11f82e5649fb2f2a4672f7 SHA-256: 469c4daf8236bd400bc6c430fee902cbf3a71a8b1a2f718e1bcc3b842268e476
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure, specifically 'https://traffine.ru/strik?utm_term=road+trip+movie+free+streaming'. This, combined with a high ML classifier score and ClamAV detection, strongly suggests a phishing or malware distribution attempt. No scripts were extracted, but the embedded URL is the primary indicator of malicious intent.

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://traffine.ru/strik?utm_term=road+trip+movie+free+streaming In PDF document text
    • https://static.s123-cdn-static.com/uploads/4375339/normal_5fe2bc8206d36.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448985/normal_5fd6a75b4b3b1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408992/normal_5fa5f7a04b900.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409256/normal_5f9a5bb83648a.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/5c020faa-04f3-434d-8d5b-0cb4f233faf3/mopepon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/da8ca3a7-6086-4cf6-9396-25dcafee8a5d/abbey_national_greenford.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e39931a-f512-4a8a-b5dd-6921097f29f6/rozetexolojezasiw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2ed25028-c9b1-4def-bbef-44e46cba5165/gaxemug.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f086a70-d4c0-42ca-b115-ea5c0edfedac/marivajeretagur.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a0caf7ae-f037-401d-a3f2-ff33d77c01ab/control_of_gene_expression_in_prokaryotes_pogil_extension_questions_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1f281397-60dc-40d2-9ad4-a6f939f01e2a/samulepovevedow.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/519c79f6-0203-421b-81a4-a238dd0d260f/3303671467.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/340c9044-dae4-42c6-96d1-b45d83863857/ideal_gas_law_review_worksheet_answers.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_off0000c62c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC62C 5396 bytes
SHA-256: 2b401c80e31a6e450513ac294549234ebce3b5c9365c1a6f0880356f780779fb
font_01_sfnt_off0000d883.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD883 10036 bytes
SHA-256: 767f1d4d38b67817a8140c0462bf54932457af4dbd3894407a27b33c6dcb8501

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