Malicious PDF — malware analysis report

Static analysis result for SHA-256 29978a1b419dbd9a…

MALICIOUS

PDF

50.1 KB Created: 2021-01-11 10:48:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: d0cb598a877fa980ac1be280c5ad395f SHA-1: d7e571e9ff8304c8cdf324a1430116c2d6d7e764 SHA-256: 29978a1b419dbd9a4b1ed7ee6cf7074be35ad0cd20bf89aa02e893b685f9dc08
182 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links, one of which points to a known malicious redirector. The heuristic firings indicate the PDF is designed as a link farm on disposable hosting, likely to phish users or distribute malware. While no scripts were explicitly extracted, the nature of the links and the ML classification suggest malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7180

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/wb?keyword=word%20racer%20game%20cheat In PDF document text
    • https://cdn-cms.f-static.net/uploads/4403819/normal_5fd8a1d0b943e.pdfIn PDF document text
    • https://tanaxigurav.weebly.com/uploads/1/3/4/2/134266775/4c2cb17da89382.pdfIn PDF document text
    • https://vakikuxikedeti.weebly.com/uploads/1/3/5/3/135320305/dabidubagotokijif.pdfIn PDF document text
    • https://cdn.sqhk.co/takejirasomu/Oif0had/filafesawiwajuler.pdfIn PDF document text
    • https://kelebewo.weebly.com/uploads/1/3/4/3/134359650/464745.pdfIn PDF document text
    • https://site-1177736.mozfiles.com/files/1177736/creepersedge_hide_or_hunt_server_ip.pdfIn PDF document text
    • https://site-1179689.mozfiles.com/files/1179689/country_duets_karaoke_youtube.pdfIn PDF document text
    • https://s3.amazonaws.com/kotenu/pekejerapezi.pdfIn PDF document text
    • https://s3.amazonaws.com/nawuvud/kibibu.pdfIn PDF document text
    • https://s3.amazonaws.com/zesotat/glencoe_biology_test_answers.pdfIn PDF document text

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