Malicious PDF — malware analysis report

Static analysis result for SHA-256 0393d1375711f958…

MALICIOUS

PDF

40.7 KB Created: 2021-03-19 21:34:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9074ee7eb01d351f9702d6a5b0340791 SHA-1: 0f7907781fb0d5e6d0dd9b92932aee9027a35e80 SHA-256: 0393d1375711f9589ca9b4010c44a334d9a4002a5a96130f32c354fe47e7b4e2
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file is identified as a phishing lure due to its image-only nature and embedded clickable link. The heuristic 'PDF_IMAGE_LURE' indicates a common tactic where a screenshot is used to hide malicious actions. The presence of numerous external PDF links, as flagged by 'PDF_SEO_LINK_FARM', suggests an attempt to distribute or link to further malicious content. The ClamAV detection further supports its malicious classification.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8801

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 40 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://dugedepap.ru/award?keyword=bohemian+rhapsody+piano+sheet+music+easy+free+pdf
    • https://nozudepoget.weebly.com/uploads/1/3/1/1/131163917/fb850b884962f4.pdf
    • http://vinnipoh.fun/28058676739jess3.pdf
    • http://zabemaladameg.medianewsonline.com/free_books_download_sites.pdf
    • https://senaduwofajix.weebly.com/uploads/1/3/0/7/130775021/fd93c8ff21d4.pdf
    • http://mstmail.space/number_tracker_app_freeimtwh.pdf
    • http://pedalini.club/83948766977039hj.pdf
    • http://dreabling.online/73852065535vqmlv.pdf
    • http://golosa-spasibo.ru/stream_3d_movies_apkw6c12.pdf
    • http://instacopyrightcenter.com/pafafufizemapato599cz.pdf
    • http://siondez.ru/teselosokupobwppkr.pdf
    • https://gadonivoxe.weebly.com/uploads/1/3/5/3/135331758/fezugedaj-nekifobuxe-morujewakirara.pdf
    • https://rixatesar.weebly.com/uploads/1/3/1/8/131871899/libuxepunezig.pdf
    • https://kudaxemukuwofi.weebly.com/uploads/1/3/4/6/134691428/ruzizaxurel-papupi-domonojepevukaw.pdf
    • https://s3.amazonaws.com/lowebemuwojiso/p90x_workout_diet_plan.pdf
    • https://s3.amazonaws.com/tarajix/kubut.pdf
    • https://s3.amazonaws.com/mubemutolewe/dotisobibubadupuzejomob.pdf
    • https://73f4d879-981c-49fe-abc7-520f36a14a84.filesusr.com/ugd/b77b08_ffdce6323762493bbfc89c89752f3e37.pdf?index=true
    • http://rulamiji.onlinewebshop.net/dream_interpretation_snakes_in_house.pdf
    • https://ea7788ad-ef5a-48b5-911d-3ad522045378.filesusr.com/ugd/f3bfbb_404830f69ab2496dae108db9e277ec3d.pdf?index=true
    • https://s3.amazonaws.com/jakujakula/font_awesome_github.pdf
    • https://cd29ef07-728f-4a0b-b57b-23e770395c36.filesusr.com/ugd/f14cf6_29c014268b98470188d37bd078dc3e6e.pdf?index=true
    • https://s3.amazonaws.com/vonuxagupeduze/atomic_betty_theme_song.pdf

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