Malicious PDF — malware analysis report

Static analysis result for SHA-256 b86573f995f2442f…

MALICIOUS

PDF

41.5 KB Created: 2021-04-27 08:35:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 91c096813228d5d2be5e80ab6443649d SHA-1: ac63e8b82b3b56ba0537cf9903dfb67ea2b2417f SHA-256: b86573f995f2442fc89b5f5696e0ea1a08296b5fd18206d9b961d04fa8fcd693
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains multiple heuristics indicating a malicious intent, including a lure for game hacking and a prompt for browser extension installation. The document body and embedded URLs point to a social engineering tactic to redirect users to potentially harmful websites. The primary malicious URL identified is https://netcdn.xyz/app/431946152/how-to-hack-into-peoples-roblox-game-hack, which is likely used to deliver a secondary payload or phish for credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9941

Heuristics 5

  • 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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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 https://netcdn.xyz/app/431946152/how-to-hack-into-peoples-roblox-game-hack PDF link annotation
    • https://lib.stie-yai.ac.id/repository/roblox-free-gamepass-exploit.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/hacks-for-roblox-kat.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/roblox-phone-hack.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/how-to-get-free-robux-easy-and-simple.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/how-can-you-hack-roblox-tattletail.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-clothes-giveaway-roblox.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/cheat-names-for-roblox.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/how-to-free-robux-2021.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/roblox-free-codes-toys.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/how-to-get-free-audio-uin-roblox-2021.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
stream_003_off0000434a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x434A 25848 bytes
SHA-256: dc506a2ef1ac32d35e95e783824354f33c4c8a4a27807df91654f06d4952995c
font_01_sfnt_off00007eb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EB3 18780 bytes
SHA-256: 1ab64a552d14ae5279bf70d9fef6af7cc15f7dedbb547a6ee8aabccc19ebdc4e

Open this report in the interactive analyzer, or submit your own file for analysis.