Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fc24e48829fb633…

MALICIOUS

PDF

42.9 KB Created: 2021-04-27 12:11:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 79c5b53d27df716c5e3bde2d4c440558 SHA-1: 8aa5b201ae2dd11b64264665fd3acbb21d4edc70 SHA-256: 9fc24e48829fb633b57c999b237047933d65da21e5fd9dc3305ad92627ba98fe
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to external websites, including one identified as a malicious redirector. The content and links are designed to lure users with promises of game hacks and free in-game currency, a common social engineering tactic. The presence of embedded links and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9941

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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-get-magma-fiend-in-roblox-for-free-game-hack In PDF document text
    • http://www.saburai.ac.id/elibrary//repository/roblox-shard-online-hack.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/fencing-roblox-hacks.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/roblox-dinosaur-simulator-cheat-engine.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/roblox-hack-de-dragon-ball-rage.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/how-to-play-a-game-that-cost-robux-free.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/robux-hack-without-verification-or-survey.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/moon-tycoon-roblox-gives-free-robux.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/free-models-for-roblox.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/roblox-free-modles.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/websites-to-hack-roblox-accounts.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_off00004501.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4501 26352 bytes
SHA-256: 7b2c63d5842ec37eb7b526f12be8c8a0040263d5659f3f75e47f5631ca551b9d
font_01_sfnt_off00008277.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8277 19480 bytes
SHA-256: 3db72613a264623730ae9449cf46a3bb6931a90f9240fb39e6f5d61d7c1ea473