Malicious PDF — malware analysis report

Static analysis result for SHA-256 b189bac1d27aa18e…

MALICIOUS

PDF

49.6 KB Created: 2021-02-25 10:45:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8b5be5fd0f86d46c130fe87b4ace29dc SHA-1: d4f03cf3c15c29e565d0deedd1f0a8349c0850b5 SHA-256: b189bac1d27aa18e8911226facfef69b087f885e9126b91141feb9b4c0067036
114 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as malicious by ClamAV and an ML classifier, and it exhibits characteristics of a phishing lure. The PDF_IMAGE_LURE heuristic indicates it's an image-only document with an action trigger, designed to trick users into clicking an embedded URL. The primary URL found, https://leonvi.ru/aws?utm_term=why+do+i+keep+getting+acid+reflux, is likely part of a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6502

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 49 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://leonvi.ru/aws?utm_term=why+do+i+keep+getting+acid+reflux
    • http://komaxinatobofe.medianewsonline.com/how_to_use_scroll_lock_without_key.pdf
    • http://dodemul.mygamesonline.org/black_and_decker_weed_eater_st4500_manual.pdf
    • http://towufato.mywebcommunity.org/pudovalofowolege.pdf
    • http://keribek.22web.org/69308567748.pdf
    • https://cdn-cms.f-static.net/uploads/4403681/normal_60251aa7c124e.pdf
    • https://cdn-cms.f-static.net/uploads/4463808/normal_60224e1eef6b6.pdf
    • https://static.s123-cdn-static.com/uploads/4483359/normal_6006c9ec0b1c6.pdf
    • https://s3.amazonaws.com/poguvelefa/mavoxobamewategi.pdf
    • https://s3.amazonaws.com/nitatotol/15489514470.pdf
    • https://s3.amazonaws.com/tevomenil/84415066473.pdf
    • https://s3.amazonaws.com/nagudo/69109291289.pdf
    • http://zasaraba.epizy.com/fanolezikufiziku.pdf

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