Malicious PDF — malware analysis report

Static analysis result for SHA-256 fcd3ba0b84aec6a2…

MALICIOUS

PDF

36.7 KB Created: 2021-04-13 02:08:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 0e2b78bc71fa6fdde38f9920d683ca16 SHA-1: 058244e7d85c4409cae497e0b6cffbda6c27dc5a SHA-256: fcd3ba0b84aec6a2c557e9f89a406f2a1430ae56daea4256ba6498f42ad1122f
114 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as a phishing lure due to its image-only nature and embedded clickable action. The ClamAV detection and ML classifier further support its malicious classification. The document body contains truncated text that appears to be a lure for downloading content, and it includes multiple embedded URLs, one of which is flagged as benign but others are unknown, suggesting a potential redirection to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6110

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
  • 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 36 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://ambrose.edu/sites/default/files/webform/fulakosilukubusovugatupus.pdf In PDF document text
    • https://www.a1touchsolution.nl/sites/default/files/51131620028.pdfIn PDF document text
    • https://www.jsif.org/sites/default/files/webform/94808830073.pdfIn PDF document text
    • https://www.uts.cw/sites/default/files/webform/suvexaxobufakup.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/zMnd8XtcwSM/uplcv?utm_term=cocktail+full+movie+download+480p+fiPDF link annotation
    • https://www.healthdata.org/sites/default/files/resumes/53082175038.pdfIn PDF document text

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