Malicious PDF — malware analysis report

Static analysis result for SHA-256 38832a6be1488c8c…

MALICIOUS

PDF

34.2 KB Created: 2021-07-04 12:12:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 1fe0c1b6899c9ee6d6bfff032916cb8e SHA-1: 020980996cf835f1ed918ee34ebf56c4a136adb5 SHA-256: 38832a6be1488c8c146b8c5765aeacabb34185d2686c3af5fa48b58e74e9c95d
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs, with a primary focus on 'free Robux' and game hack lures. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' strongly indicates the document's intent is to redirect users to potentially malicious sites. While no scripts were explicitly extracted, the PDF structure and embedded links suggest a phishing or scam attempt, likely initiated via a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • 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://netcdn.tw/app/431946152/rbxcity-free-robux-game-hack PDF link annotation
    • http://lib.stie-aub.ac.id/repository/a-wolf-or-other-roblox-hack_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/free-card-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/robux-hack-just-put-user_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/what-is-the-best-free-for-all-roblox-game_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/free-roblox-password-and-username_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/free-printable-roblox-birthday_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/roblox-da-hood-hack-download_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/free-reedeem-codes-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/free-2021-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/youtube-how-to-use-cheat-engine-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/roblox-work-at-a-pizza-place-money-hack-script_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/galaxy-roblox-money-hack_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/roblox-one-piece-mythical-fruits-hack_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/how-to-use-a-script-hack-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/robux-gratis-sin-hacks_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/coin-master-free-spins-link-today-hack_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/minecraft-wurst-hacked-client_GM479516143.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/774-roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/25-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000304a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x304A 21748 bytes
SHA-256: cee7dcdc0e93856b6dd3a6ed9b0dc2f383168d9b4d63175e042bd5c1348fd905
font_01_sfnt_off00006059.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6059 19120 bytes
SHA-256: 907f950e015ca7f55d34c04d668a41be98fd0850b0b9f22eb15d2dc956c9f495

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