Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec25cdab22e7e96b…

MALICIOUS

PDF

36.0 KB Created: 2021-07-05 00:03:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 0b19ba40b760172b0a4bb120634e5bd6 SHA-1: 6bb4563cbc95884ab8b2102675f09541bbe21f3f SHA-256: ec25cdab22e7e96b0c5a13c59cf39262aaff01a7e18666e56f61fab14dd09e19
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/how-to-hack-coin-master-computer-game-hack PDF link annotation
    • http://lib.fekon.untad.ac.id/repository/wyas-of-getting-robux-for-free_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/neffex-greatest-copyright-free-roblox-music-id_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-redeem-code-robux_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/cheat-roblox-sound_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/robux-generators-that-actually-work_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/coin-master-daily-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/roblox-april-fools-hack-2021_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/minecraft-pe-free_GM479516143.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/coin-master-hack-2021-ios-download_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/minecraft-xbox-one-edition-digital-code-free_GM479516143.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/best-free-hacked-client_GM479516143.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/hack-noclimb-roblox-2021-marzo_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-robux-videos_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/synapse-roblox-free-trial_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/invisible-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/cheat-cashed-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/get-free-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/muscle-simulater-roblox-cheat-codes_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_off000034d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x34D9 23120 bytes
SHA-256: 03ecddd58a32f94d6c4304c84aec73c48c6987342d45084c6230410fcfbafe77
font_01_sfnt_off000068d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68D4 18744 bytes
SHA-256: abb8091b9ba656fcd895bd1a78debea43f35d283977fb140f6d1e49de3862e6d

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