Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0fda1dffab433d5…

MALICIOUS

PDF

42.9 KB Created: 2021-06-04 06:21:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: a6925a3fff07359289ad05598c846e95 SHA-1: b3107a102959894b661913a01fce1cba5efd2060 SHA-256: c0fda1dffab433d55cf368f51cfa237951d9c5bd2da2ed289afd58fead4f632c
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 0.9874

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.online/app/406889139/mcpe-master-hack-coins-game-hack PDF link annotation
    • http://muslib.unmus.ac.id//repository/how-to-win-attack-madness-in-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/free-robux-giveaway_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-hack-here_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-get-free-robux-gift-cards_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/hacks-for-minecraft-windows-10_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-robux-net_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/tiktok-free-textbooks_GM835599320.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/worst-roblox-avatars_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/robux-premium_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/how-to-get-a-lot-of-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/avatar-the-last-airbender-roblox_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-hack-android_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/try-minecraft-free_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/earn-robux-com_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-get-free-coins-and-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-free-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-roblox-groups-with-funds_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/hack-coin-master-free_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/hack-coin-master-download_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/coin-master-link-today_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_004_off00004e6e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E6E 24556 bytes
SHA-256: f4e46d5ecb33d84c8e3259c39243eff5c0cae705463d05ffeeaa871fcab69c26
font_01_sfnt_off000085fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85FB 17892 bytes
SHA-256: 0c63e033d5ffe887ffec85b5cafaf72e8c864209b86636c790ff2846ce341ff6

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