Malicious PDF — malware analysis report

Static analysis result for SHA-256 a08f0147a7704703…

MALICIOUS

PDF

35.1 KB Created: 2021-06-25 18:32:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 967e0d32373f53fc79357aded47839fb SHA-1: 45649899491313290fa156f7067c81d938221479 SHA-256: a08f0147a77047031b9dfb823ffcd29cac0a9515798c06768e0933f2f8a9049a
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains embedded URLs and a call-to-action phrase, strongly suggesting a lure for users to download potentially malicious content related to game hacking. The ML classifier also flagged this PDF with high confidence. The presence of a password archive lure heuristic indicates an attempt to bypass security controls by encrypting the payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/cheat-engine-lua-roblox-scripts-game-hack PDF link annotation
    • http://library.stiks-tarakanita.ac.id/repository/free-xbox-gameachivements-roblox_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/roblox-password-hacker_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/free-robux-websites-that-work_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/commande-cheat-synapse-roblox_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/javascript-free-robux_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/how-to-get-free-food-on-coin-master_GM406889139.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/how-to-hack-roblox-accounts-with-a-url_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/cheat-codes-for-grand-blox-auto-roblox_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/websites-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/rbx-place-free-robux_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/coin-master-games-hack_GM406889139.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/freespins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/using-cheat-engine-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/roblox-account-taker_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/free-minecraft-worlds_GM479516143.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/hack-coin-master-using-cheat-engine_GM406889139.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/hacked-roblox-game_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/coin-master-200-spin-link_GM406889139.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/free-robux-generator-no-verification-2021_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_off000031fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31FB 22408 bytes
SHA-256: b38246edc7020ee81f7645b6c3741071675806c618113950fa9318cd5c4ebb98
font_01_sfnt_off000063d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63D4 19192 bytes
SHA-256: a2a4508a4fadae71dba7f720c3eb7162d7883995feac034da31b2bcd8c8a5df1

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