Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a9caec79d108752…

MALICIOUS

PDF

31.7 KB Created: 2020-10-10 02:32:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 4c6c74a390279a18498b3eeaec17a388 SHA-1: 37e1633450bd8e63fed36dc83280146355163d06 SHA-256: 1a9caec79d10875284d2aa16f8a4b2842239095e985c8cf538c4af7b985f4902
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9967

Heuristics 3

  • 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/strik?keyword=persona+5+ryuji+confidant+abilities In PDF document text
    • http://gigez.shopthepurplepeacock.com/uploads/1/3/2/7/132740186/jatejoxim_zolarajole.pdfIn PDF document text
    • http://files.stephaniedigrazianutrition.com/uploads/1/3/0/7/130775677/9124663.pdfIn PDF document text
    • http://files.davewatkinsmusic.com/uploads/1/3/1/4/131437362/8717897.pdfIn PDF document text
    • http://files.wacooutdoorkitchens.com/uploads/1/3/1/3/131380438/bixadavuxike.pdfIn PDF document text
    • https://site-1037028.mozfiles.com/files/1037028/jaruxagak.pdfIn PDF document text
    • https://site-1042711.mozfiles.com/files/1042711/33673973232.pdfIn PDF document text
    • https://site-1040179.mozfiles.com/files/1040179/dimatinuliluxudepo.pdfIn PDF document text
    • https://site-1039414.mozfiles.com/files/1039414/37348525760.pdfIn PDF document text
    • https://site-1037120.mozfiles.com/files/1037120/382061003.pdfIn PDF document text
    • https://site-1037246.mozfiles.com/files/1037246/82279132193.pdfIn PDF document text
    • https://site-1043878.mozfiles.com/files/1043878/gapelaratesatagud.pdfIn PDF document text
    • https://site-1036753.mozfiles.com/files/1036753/jebexofozam.pdfIn PDF document text
    • https://site-1040095.mozfiles.com/files/1040095/monamorazunedodoruga.pdfIn PDF document text
    • https://site-1042835.mozfiles.com/files/1042835/73297191896.pdfIn PDF document text

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