Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5d8025339b3869c…

MALICIOUS

PDF

239.9 KB Created: 2021-04-05 04:09:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 52ede1cc5ff2fa43c4b584a5464a2584 SHA-1: 517a441ecf21c72241dfd7488549d57fedb23235 SHA-256: f5d8025339b3869cd4c82b006659b9de3372f84f1a262f1747bf3bd68da45c86
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a high-severity heuristic firing for a game hack lure, specifically targeting Roblox. The embedded URL, http://gaminggenerator.org/app/431946152/roblox-any-game-hack, is the primary indicator of this malicious redirection. ClamAV also detected this file as Pdf.Phishing.Roblox062100-9873116-0, further confirming its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5773

Heuristics 5

  • ClamAV: Pdf.Phishing.Roblox062100-9873116-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Roblox062100-9873116-0
  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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 http://gaminggenerator.org/app/431946152/roblox-any-game-hack PDF link annotation
    • https://www.saisystem.it/images/roblox-nike-t-shirt-free.pdfIn PDF document text
    • http://riccardodurso.it/images/how-to-hack-roblox-accounts-2021-december.pdfIn PDF document text
    • http://logisticgroup.co/images/roblox-4-free-items.pdfIn PDF document text
    • https://www.alu-as.cz/images/free-robloxcom-codes.pdfIn PDF document text
    • http://santeh-40.ru/images/flob-fun-roblox-hacker-generator.pdfIn PDF document text
    • https://europe-upkl.eu/images/zombie-rush-roblox-hack.pdfIn PDF document text
    • http://malichy.pl/images/roblox-fly-script-hack.pdfIn PDF document text
    • http://julo-it.net/images/roblox-hacker-t-shirt.pdfIn PDF document text
    • http://wireprod.net/images/roblox-hack-gg-uardika.pdfIn PDF document text
    • http://innovativefs.co.uk/images/best-roblox-hack-website.pdfIn PDF document text
    • http://jbm-constructions.com/images/officialrobuxhack-updated.pdfIn PDF document text
    • http://britishcomics.com/images/free-candy-20-roblox-hack.pdfIn PDF document text
    • https://rieber-transporte.de/images/how-do-you-get-free-robux-on-android.pdfIn PDF document text
    • http://w-i-r.de/images/pastebin-free-robux-100-works.pdfIn PDF document text
    • https://www.gymun.cz/images/earn-free-robux-website.pdfIn PDF document text
    • http://butkimloai.com/images/how-do-u-become-a-hacker-in-roblox.pdfIn PDF document text
    • http://www.mosaikshop.at/images/free-roblox-anime-free-shirts.pdfIn PDF document text
    • https://open-coffee-drimmelen-geertruidenberg.nl/images/admin-vs-hacker-roblox.pdfIn PDF document text
    • http://www.oberberger.it/images/free-robux-no-apps-no-human-verification.pdfIn PDF document text
    • http://apcupschennai.com/images/hack-of-getting-free-robux.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00036ad6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x36AD6 21820 bytes
SHA-256: fcac7bd177aa13bcf855134077f0f7e43114e4d3c5d0f522e0421174f8a00e75
font_01_sfnt_off00039a43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x39A43 18000 bytes
SHA-256: f29d6e2508815871dbd3857fd4d19b9ffe24fe0c4cb2e23dc2fc90d569c37902