Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c1187adda66d6da…

MALICIOUS

PDF

42.3 KB Created: 2021-05-13 03:04:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: c2ab6da93d17bd39f0d3c560b8860cd7 SHA-1: a4ca094076454644dd76eba6ca1c812ee6539c8e SHA-256: 2c1187adda66d6daefd58f4034fc41950d457a69e4279bed50a90f6d542d5ad6
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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 https://netcdn.xyz/app/431946152/roblox-free-executor-game-hack PDF link annotation
    • http://jbtlive.com/assets/CKImages/files/toolbox-for-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://jbtlive.com/assets/CKImages/files/free-coins-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://jbtlive.com/assets/CKImages/files/blox-world-free-robux_GM431946152.pdfIn PDF document text
    • http://jbtlive.com/assets/CKImages/files/coin-master-free-link_GM406889139.pdfIn PDF document text
    • http://jbtlive.com/assets/CKImages/files/rewards-roblox-com_GM431946152.pdfIn PDF document text
    • http://jbtlive.com/assets/CKImages/files/free-roblox-money_GM431946152.pdfIn PDF document text
    • http://jbtlive.com/assets/CKImages/files/what-are-points-for-in-roblox_GM431946152.pdfIn PDF document text
    • http://jbtlive.com/assets/CKImages/files/how-to-get-free-coins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://jbtlive.com/assets/CKImages/files/roblox-speed-hack_GM431946152.pdfIn PDF document text
    • http://jbtlive.com/assets/CKImages/files/get-free-robux-gg_GM431946152.pdfIn PDF document text
    • http://jbtlive.com/assets/CKImages/files/free-robux-hack_GM431946152.pdfIn PDF document text
    • http://jbtlive.com/assets/CKImages/files/static-moonactive-net-rewards_GM406889139.pdfIn PDF document text
    • http://jbtlive.com/assets/CKImages/files/is-free-robux-real_GM431946152.pdfIn PDF document text
    • http://jbtlive.com/assets/CKImages/files/coin-master-daily-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
    • http://jbtlive.com/assets/CKImages/files/get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://jbtlive.com/assets/CKImages/files/free-roebucks-com_GM431946152.pdfIn PDF document text
    • http://jbtlive.com/assets/CKImages/files/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • http://jbtlive.com/assets/CKImages/files/are-there-any-coin-master-hacks-that-actually-work_GM406889139.pdfIn PDF document text
    • http://jbtlive.com/assets/CKImages/files/free-robux-now_GM431946152.pdfIn PDF document text
    • http://jbtlive.com/assets/CKImages/files/today-free-spin-coin-master_GM406889139.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_off000048d3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48D3 25488 bytes
SHA-256: 3d997e31721c6da17eaa45a5f0b252e2f6868e735b38f498d8d04d5ff1124473
font_01_sfnt_off00008338.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8338 18192 bytes
SHA-256: 7ba247a64e9cc24d80440ed01eefe46d1337aad9cec78f28e7b2b5b32c9414c4

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