Malicious PDF — malware analysis report

Static analysis result for SHA-256 a82a1265b8740af2…

MALICIOUS

PDF

34.8 KB Created: 2021-06-26 08:44:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: aa1c6385d847b44429d53b50b01a33e4 SHA-1: 6db1b762c63da527bc34c023f444275c7273ea72 SHA-256: a82a1265b8740af2ea24619282979badef08fdb85e21112a6ca32096aefb37ef
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 0.9980

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.co/app/431946152/free-robux-2021-irobux-game-hack PDF link annotation
    • http://www.peterbarsony.com/userfiles/files/how-to-hack-something-into-your-roblox-inventory_GM431946152.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/minecraft-launcher-download-free_GM479516143.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/claim-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/free-robux-wheel_GM431946152.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/minecraft-story-mode-free_GM479516143.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/free-minecraft-java-account_GM479516143.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/coin-master-free-spins-only_GM406889139.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/how-to-create-a-free-vip-server-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/roblox-free-draw-alpha-2-discord-server_GM431946152.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/blox-best-robux_GM431946152.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/how-to-get-god-mode-on-roblox-with-cheat-engine_GM431946152.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/coin-master-sound-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/how-to-get-free-robux-for-free_GM431946152.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/earn-free-robux-by-downloading-apps-and-completing-offers_GM431946152.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/free-coins-and-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/can-i-have-robux_GM431946152.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/free-account-roblox-with-robux_GM431946152.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/roblox-hack-codes_GM431946152.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/coinmaster-spin-ml-free_GM406889139.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/how-can-i-get-free-spins-on-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
font_00_sfnt_off0000304c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x304C 22552 bytes
SHA-256: 7b0fae44281874e05d54eca16a67b3686b9283031964547b48cfcc0da57c9c92
font_01_sfnt_off000062ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62AC 19116 bytes
SHA-256: b81a5a64175e887637be784940757ba5ccb10249597861d392c3d6e1cb3c72d8

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