Malicious PDF — malware analysis report

Static analysis result for SHA-256 71054785a1a5a57e…

MALICIOUS

PDF

34.2 KB Created: 2021-06-25 13:45:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 8e15dd8c9ecf207130f68e72903eae3a SHA-1: ab1fc6cdf6aa33ef13c6d450be794ae305feac13 SHA-256: 71054785a1a5a57ecf9029408bf55ffbafd93348862dfe86f50d77374c470450
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/roblox-cheat-generator-free-download-game-hack PDF link annotation
    • http://library.imz.or.id/repository/roblox-speed-hacks-that-work_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/coin-master-mod-version-free-download-34-4_GM406889139.pdfIn PDF document text
    • http://library.imz.or.id/repository/free-coin-master-generator_GM406889139.pdfIn PDF document text
    • http://library.imz.or.id/repository/coin-master-free-gifts_GM406889139.pdfIn PDF document text
    • http://library.imz.or.id/repository/roblox-hackers-list_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/minecraft-pvp-hacks_GM479516143.pdfIn PDF document text
    • http://library.imz.or.id/repository/apps-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/roblox-all-gamepasses-for-free-script_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/roblox-redeem-toy-codes-free_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/ulgamesresources-com-free-robux_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/roblox-prison-life-hack-2021_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/www-robux-us_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/how-to-get-robux-easy-hack_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/coin-master-spin-hack-2021_GM406889139.pdfIn PDF document text
    • http://library.imz.or.id/repository/1x1x1x1-roblox-id_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/roblox-cheats-dungeon-quest_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/roblox-free-clothes-girl_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/free-gear-in-roblox-2021_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/minecraft-bedrock-edition-free_GM479516143.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_off00002c86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C86 22760 bytes
SHA-256: fdd1a6c9c428b1ea5bdd640badc1be668b4456c34c60977edc1e217cc446a00f
font_01_sfnt_off00005f4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F4B 19424 bytes
SHA-256: 0ce025e1e2142bf8e4bf4e95fb4d217cf26cb6655003ee6f77242acca206afac

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