Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc2b2e64328a655d…

MALICIOUS

PDF

35.3 KB Created: 2021-07-05 19:54:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: dd60d75d16366adb2526fa9682bb7f57 SHA-1: a9916c8355423f11379e5ebf678833964fb66d24 SHA-256: bc2b2e64328a655dd958d98d2ba55dbb11d12a2aa610e2a72c2a249d6c366cf4
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.tw/app/406889139/coin-master-free-coins-twitter-game-hack PDF link annotation
    • http://library.forda-mof.org/katalog/repository/robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-robux-with-no-survey_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-to-tiktok-hands-free_GM835599320.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-hack-android_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/roblox-free-roblox_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/get-free-spins-on-coin-master-links_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-to-protect-speed-hacking-from-games-roblox_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/robux-hack-kids_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/roblox-game-free-download_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/minecraft-java-free-account_GM479516143.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-free-coins-link-march-2021_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-daily-free-spins-link_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-free-spins-and-coins-daily_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/roblox-exploit-super-nice-mml-hacks_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-coins-for-flip-master_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-24-7-minecraft-server_GM479516143.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-to-get-robux-on-roblox-using-cheat-engine_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/synapse-roblox-free-download_GM431946152.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_off000033df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33DF 23088 bytes
SHA-256: b69163211bc4b3295614f84cbbb26bde25235b49ebcc66134b6ae117789cefac
font_01_sfnt_off000067d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67D0 18164 bytes
SHA-256: 09e900af93239ebf083e1853a07df87e0e3ca0331bfdd202e2e38c424b6e948b

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