Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d5cc19cf82e9628…

MALICIOUS

PDF

37.6 KB Created: 2021-10-01 14:57:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-23
MD5: 5a082dc128e6e297da9a5ef919eea603 SHA-1: d89179f7a4ce2ec94431a35a03cbbb35d8472be3 SHA-256: 7d5cc19cf82e96285cfe33547246724f98703e30af967ca1986968e4fc45e559
144 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a phishing lure, including being image-heavy with minimal text and containing multiple external links. The ClamAV detection and ML classifier strongly indicate malicious intent. The presence of numerous unknown URLs suggests a potential distribution or redirection mechanism, likely leading to a malicious payload or phishing page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7855

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 37 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://turkeyinsurance.info/images/file/pisomikuvibog.pdf In PDF document text
    • https://apapunada.com/contents/files/sedaguwereropojejodi.pdfIn PDF document text
    • http://awarelaxcentrum.cz/user_files/file/gufapozemejadevokali.pdfIn PDF document text
    • http://kidneytracker.com/ckfinder/userfiles/files/63037790025.pdfIn PDF document text
    • http://elverum-revmatiker.no/images/file/74997165564.pdfIn PDF document text
    • https://www.toptalentusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614afdfd023ee---10752165942.pdfIn PDF document text
    • https://inmaabiladi.com/userfiles/files/vinamixagoferiwixigobo.pdfIn PDF document text
    • http://quaretti.it/userfiles/files/zezoda.pdfIn PDF document text
    • http://web5gstore.com/Files/files/rawagelawuz.pdfIn PDF document text
    • http://crystalnymph.by/wp-content/plugins/super-forms/uploads/php/files/1d8e454c08185659bdfb51ca1b819a0c/88447276814.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/cv9VXjIrmdE/uplcv?utm_term=webcam+app+android+phonesPDF link annotation

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