Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3ec57f9b04c8576…

MALICIOUS

PDF

38.0 KB Created: 2021-04-02 06:40:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d76878c9e7d89870eca12eb35b338ce1 SHA-1: cdf5a771937ef02b2f692e0dad44153aaac068d6 SHA-256: a3ec57f9b04c857677813b1eadee22a6cc60bf1fa7c7d3b7480f76e69b8c9753
114 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as a phishing lure due to its small size and image-heavy content, typical of a screenshot designed to hide a clickable element. The embedded URL, https://gimoguvi.ru/award?keyword=sql+interview+questions+and+answers+for+3+years+experience+pdf, is the primary indicator of malicious intent, likely leading to a phishing page or malware download. No scripts were extracted, but the PDF structure and URL suggest a phishing attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5362

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 38 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://gimoguvi.ru/award?keyword=sql+interview+questions+and+answers+for+3+years+experience+pdf
    • https://cdn.sqhk.co/fagijopi/mDIDHMB/mabavuzip.pdf
    • http://luminar2-download.xyz/2016_happy_new_year_greetingsdpv35.pdf
    • http://antonioit.space/zopagewurogepavapakupiraguo3k.pdf
    • https://s3.amazonaws.com/fejenijovekozu/juzumazevanixarebazejeli.pdf
    • https://d1b33a7b-cde1-45d4-bc15-d4d3b6236ac5.filesusr.com/ugd/1d64af_6b4edd24dacb47d9b5b2184c0836e517.pdf?index=true
    • https://s3.amazonaws.com/xalexojaxipud/bridges_in_mathematics_grade_5_student_book_answer_key.pdf
    • https://5a6df620-610b-4d6f-8f1b-71e936bb70bc.filesusr.com/ugd/1f5cef_a39763d9c0f4474e8628961951350e69.pdf?index=true
    • https://s3.amazonaws.com/rudelazifizuvo/a5_booklet_template_powerpoint.pdf

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