Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c6f36d5fd4e59b9…

MALICIOUS

PDF

70.7 KB Created: 2020-12-24 09:41:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 7fc039fd6e914ff0db60f87582fc2db0 SHA-1: f64a08df06de7e88f9534febcd2c13d846291e4d SHA-256: 6c6f36d5fd4e59b919fac771c7970fbd5c279b15c06c9b5c5d6dfdfde29948af
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/strik?utm_term=queen+greatest+hits+ii+vinyl+review'. This indicates the document's primary purpose is to lure the user to a potentially harmful external site. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the presence of a malicious URL is sufficient evidence for a phishing or malware distribution attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/strik?utm_term=queen+greatest+hits+ii+vinyl+review In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tawosutosuxi/fukoboromezagudil.pdfIn PDF document text
    • https://s3.amazonaws.com/subud/torileposibefazof.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/785a4af5-b5e6-45ed-bce1-597fc9abdc0e/fuxaburiroxiwopebadalon.pdfIn PDF document text
    • https://s3.amazonaws.com/livivuvuwugeb/gowagofofe.pdfIn PDF document text
    • https://s3.amazonaws.com/buxoparadazegu/82950730727.pdfIn PDF document text
    • https://s3.amazonaws.com/gumegulaxi/kaspersky_activation_code_2016.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4affc16e-d1b6-4b99-ab9f-c3dfef0b171f/the_endurance_book.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/477f7254-68a1-4a77-8eb1-65dc4a8f6463/pac_12_conference_latest_news.pdfIn PDF document text
    • https://s3.amazonaws.com/vajefam/58867939358.pdfIn PDF document text
    • https://s3.amazonaws.com/semuxemakaw/english_test_for_interview_with_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwisigetizoxif/forming_a_shed_base.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f2369a7-ca94-41e3-9157-d1e8845efc67/vimovumukexafimalidis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a3cea9dd-200a-4d20-99b8-bdf2406a8e3a/gitaz.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_off0000d7b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7B6 5260 bytes
SHA-256: 7c59aeb7a0bd30b1a37fbdaed8aec85409a3a974c2a09dd95d9a464bbb8cc4e9
font_01_sfnt_off0000e9b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9B1 10740 bytes
SHA-256: 73c89665fe77e07a56d6f84e72c2954d65333420e504889fcb3ff0311597217d

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