Malicious PDF — malware analysis report

Static analysis result for SHA-256 5fce65f5da0f4a1d…

MALICIOUS

PDF

47.6 KB Created: 2021-10-05 18:30:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 26af2a3e309b107a3bb91217a38b9bd0 SHA-1: d0091cf66b05fb5b374e954d90a1603c0eec944f SHA-256: 5fce65f5da0f4a1de804788dc0cda5834d050eb65c1f94450e7c5129b17215c3
144 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 action triggers, typical of a screenshot-based scam. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates the document functions as a link farm on disposable hosting, aiming to redirect users to various unknown URLs. While no scripts were explicitly extracted, the ClamAV detection and ML classifier strongly suggest malicious intent, likely involving the exploitation of PDF vulnerabilities or redirection to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9202

Heuristics 5

  • 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 47 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://balaji-technology.com/userfiles/file/debutotisi.pdf
    • http://kzlo.pl/fotki/fotki/file/rijobiwazajaxubap.pdf
    • https://romalasergroup.com/userfiles/files/40340677514.pdf
    • https://jucariicopilasi.ro/app/webroot/files/userfiles/files/sopenufugumarigowekexo.pdf
    • https://aljazeerahpetroleum.ae/userfiles/files/80665560398.pdf
    • http://gshosnab.ru/userfiles/file/lipowewole.pdf
    • http://vitalbafitnessclub.eu/userfiles/files/55227443590.pdf
    • http://nataliashishkina.com/userfiles/file/9159550497.pdf
    • https://best-of-geldanlagen.de/userfiles/file/kikejamawitonisenererog.pdf
    • http://myshiou.com/uploads/files/202110020452425746.pdf
    • http://escrima-rlp.de/userfiles/file/tawekowalaketonusuresuge.pdf
    • http://zrdb-drogbud.pl/Upload/file/39701918382.pdf
    • https://xn--1--8kcai1ck2bs.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/e625b777e2a507c715f9f536ea3fae00/mesurajipedufapu.pdf
    • http://sgrdpandher.com/userfiles/file/53908951383.pdf
    • https://atputasbaze.lv/images/userfiles/files/9360574930.pdf
    • https://alirezamirmohammadi.com/images/upload/files/vejonepu.pdf
    • https://hnhaa.com/userfiles/tnejp/files/bopasaretufavavupivog.pdf
    • http://tries.cz/media/images/upload/file/99309724068.pdf
    • http://goodfortune.hk/UpLoadFile/file///wogigofojunawajexasigipu.pdf
    • http://kortennis.co.kr/B/ck/ckfinder/userfiles/files/28492113937.pdf
    • https://mklaassen.nl/images/file/wabetisakob.pdf
    • https://moma-restaurant.com/wp-content/plugins/formcraft/file-upload/server/content/files/161403d6e9cad6---93126714740.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=what+direction+should+bat+houses+face

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