Malicious PDF — malware analysis report

Static analysis result for SHA-256 cfc221f2f1e7c5c1…

MALICIOUS

PDF

74.7 KB Created: 2020-11-24 08:07:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 7270da76269c87b638f8c13f9a66ab3b SHA-1: dd265637384062f8f2253a7a001524349ffee767 SHA-256: cfc221f2f1e7c5c1f7f185b3fe2ba67274eb22a996c4f2b41a061a07820785e5
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/aws?utm_term=bounty+killer+songs+free'. This URL is likely used to deliver a malicious payload or redirect the user to a phishing page. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, suggests a lure related to 'Bounty killer songs free', aligning with a phishing or scam attempt.

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/aws?utm_term=bounty+killer+songs+free In PDF document text
    • https://cdn-cms.f-static.net/uploads/4381081/normal_5f8d1494986ae.pdfIn PDF document text
    • https://zeleruzonupaza.weebly.com/uploads/1/3/4/3/134358533/kapefa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366982/normal_5f8c71eb95593.pdfIn PDF document text
    • https://webuxeneme.weebly.com/uploads/1/3/4/3/134368634/0ebef11.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406229/normal_5fabeba868926.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/3840f778-6a2e-4cde-b837-3179f9baf1e5/19071031636.pdfIn PDF document text
    • https://s3.amazonaws.com/mafavuzenoliki/harris_benedict_formule_afvallen.pdfIn PDF document text
    • https://s3.amazonaws.com/bunobu/gofojoxo.pdfIn PDF document text
    • https://s3.amazonaws.com/vovuzize/wolf_dragon_hybrid_furry_reference_sheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f73eb9c1-e167-40fc-a3fc-0af3456cf644/rupujute.pdfIn PDF document text
    • https://s3.amazonaws.com/nezanurugega/google_apps_spreadsheet_vs_excel.pdfIn PDF document text
    • https://s3.amazonaws.com/jivala/bamboo_plywood_sheets_near_me.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/73a98508-5006-4c05-805a-9edac5f05af2/38676842421.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_off0000e488.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE488 4940 bytes
SHA-256: b3bdab4f6417b7abb3f45d581755c4e8d7974670dfd398f6b9b03fde5f61f224
font_01_sfnt_off0000f57c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF57C 12372 bytes
SHA-256: fa821da4dffe581a5b66ff328f3561255260754da2f2bfebfb2cb757300f57ac

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