Malicious PDF — malware analysis report

Static analysis result for SHA-256 4bf66d6c6c4368b2…

MALICIOUS

PDF

46.2 KB Created: 2021-04-02 00:20:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fea75155aa005d4d1907f60a46f47380 SHA-1: 3070527bba1b11cae518a76ddf9f8d5f3e1d0823 SHA-256: 4bf66d6c6c4368b248638de004f82272e90a89dfe47681df97f62805b07c23fe
114 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as a phishing lure due to its image-heavy nature and embedded clickable link. The ClamAV detection and ML classifier further support its malicious classification. The primary IOC is the external URL embedded within the document, which likely serves as the next stage of the attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8552

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 46 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=world+map+with+countries+black+and+white+pdf
    • https://cdn.sqhk.co/pamavunawi/idieNEY/13486645090.pdf
    • https://cdn.sqhk.co/wigalefu/DjjhajN/pagefebal.pdf
    • https://cdn.sqhk.co/vovewotutal/iafs9rA/ferote.pdf
    • http://romotogez.22web.org/6700724898.pdf
    • https://cdn.sqhk.co/jutusaxibu/Zfbzbig/mine_rescue_level_11-_17.pdf
    • https://cdn.sqhk.co/pajegili/mgecTih/gowitigufefoni.pdf
    • https://cdn.sqhk.co/dujagazatad/jdKOPha/plain_city_elementary_hours.pdf
    • https://8a833fea-7c9a-4d2e-a5a7-d3590f42a3e5.filesusr.com/ugd/9aab09_67ce0f723de44be98f1730c6b969903d.pdf?index=true
    • https://6d428a25-da86-44fa-8f13-5b0f09742281.filesusr.com/ugd/3649d2_4634f232217f4335b84f03370cfb4553.pdf?index=true
    • https://e9b66cc5-9289-431c-8f17-6739e1cd2d88.filesusr.com/ugd/c8f33b_19bd9eab8c0a4b639b9fd89617f16dcf.pdf?index=true
    • https://c06d174a-caca-4ab2-b5a0-4525cd3135d4.filesusr.com/ugd/856cea_6825504aaa3c481aaa6ec2510a0bc8b9.pdf?index=true
    • https://7f3356c1-ec1f-498a-9d41-5b36c14d87b7.filesusr.com/ugd/98d33d_7a0aa91e63ba435d96b64b0dc56b89e4.pdf?index=true
    • http://toxezapa.rf.gd/vepibuv.pdf
    • http://demevobofimozu.epizy.com/date_sheet_ba_2019_ajk_university.pdf
    • https://fbaba6ab-37cf-477f-82bd-e10a416eccda.filesusr.com/ugd/3c8574_610f773c29434e438bf7bf3575777d18.pdf?index=true
    • https://19eae752-0dc2-40b2-988a-3ead9c543f91.filesusr.com/ugd/dee0a8_88c4f4bd565342c3bb1cd30fea8f72cc.pdf?index=true
    • https://9579f988-9383-433c-acf3-5fff76e0c882.filesusr.com/ugd/191a6d_949becd0310440c18ff26333ed6aeb9a.pdf?index=true
    • https://8e8ef6ac-913c-489f-8395-c30730e7ba0a.filesusr.com/ugd/f39c52_8eb954f7e94243818a7d376009a60275.pdf?index=true