Malicious PDF — malware analysis report

Static analysis result for SHA-256 47a4ace49209b21a…

MALICIOUS

PDF

53.6 KB Created: 2021-03-31 18:02:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 3b5da893def05a1ce9014654263f0a1e SHA-1: 28bd0a477723dfe886dc5aa06771a7448529c4e5 SHA-256: 47a4ace49209b21a88d69ac9a01afe911528397e9d763c5bf32a57a67867a2f8
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

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

Machine Learning

  • Nyx PDF Classifier malicious score 0.8574

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
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://jottigo.ru/strik?utm_term=a+single+man+book+summary PDF link annotation
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    • http://lnstagramcopyrighthelps.com/wolok66g7m.pdfIn PDF document text
    • http://tgesheff.xyz/whatsapp_messenger_for_ipad_9._3._5u8ed6.pdfIn PDF document text
    • http://chunyoo.com/maforefoxexasedufekiruj1orqf.pdfIn PDF document text
    • http://lnstagram-helping-centre.com/kangaroo_care_guidelines_ukumkka.pdfIn PDF document text
    • http://instapresent.site/hp_government_holidays_2020a9mi2.pdfIn PDF document text
    • http://belplitka.ru/jimudowamumutohcncu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1f735686-ec0f-4da2-a4d0-554939513a14/vavukisipura.pdfIn PDF document text
    • https://s3.amazonaws.com/satudifin/57283969898.pdfIn PDF document text
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    • https://uploads.strikinglycdn.com/files/dc32ec1f-e592-481e-bb00-9ed89eebb70e/71613285941.pdfIn PDF document text
    • https://s3.amazonaws.com/winumigutam/pazazokesatikori.pdfIn PDF document text
    • https://s3.amazonaws.com/geradi/5056281308.pdfIn PDF document text
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    • https://uploads.strikinglycdn.com/files/dcca84ee-5672-4b5a-9065-905e40dac616/89579274662.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9357a69-bed4-4615-a0b2-03f54c757fd1/78590817487.pdfIn PDF document text
    • https://s3.amazonaws.com/lodazojamuva/47728098482.pdfIn PDF document text