Malicious PDF — malware analysis report

Static analysis result for SHA-256 da7c4706d310fb08…

MALICIOUS

PDF

34.3 KB Created: 2021-06-27 08:36:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 75b4bbdc4bbaee0d4da364781273f733 SHA-1: 8e31fbd0cf0cada0370e3256dc033d4c48d2ac0d SHA-256: da7c4706d310fb08a3212d1a3958d172c19b7c62d57b499789aaa4d1352c3bff
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains numerous links to external websites, many of which are presented as resources for game hacks and cheats. The presence of a PDF link farm and the ML classifier's high confidence score indicate a malicious intent to direct users to potentially harmful content. The document body explicitly mentions game hacks, reinforcing the lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/how-to-hack-one-death-run-roblox-game-hack
    • http://elibrary.smknesbu.sch.id/repository/roblox-troll-players-inject-script-hack-pastebin_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/coin-master-free-coins-link-2021-today_GM406889139.pdf
    • http://elibrary.smknesbu.sch.id/repository/hack-coin-master-android-game_GM406889139.pdf
    • http://elibrary.smknesbu.sch.id/repository/how-to-be-a-hacker-in-roblox-prison-life_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/roblox-hack-the-free-generator-robuxgaminghacking_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/coin-master-hacks-for-gold-cards_GM406889139.pdf
    • http://elibrary.smknesbu.sch.id/repository/coin-master-daily-spin-free_GM406889139.pdf
    • http://elibrary.smknesbu.sch.id/repository/coin-master-free-soins_GM406889139.pdf
    • http://elibrary.smknesbu.sch.id/repository/free-robux-hack-2021_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/rbx-free-robux_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/roblox-cheat-no-key-required_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/coin-master-online_GM406889139.pdf
    • http://elibrary.smknesbu.sch.id/repository/coin-master-free-spins-and-coins-2021_GM406889139.pdf
    • http://elibrary.smknesbu.sch.id/repository/how-do-i-get-robux_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/pastebin-com-free-robux-2021_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/make-free-robux_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/dantdm-roblox-shirt-free_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/free-roblox-characters_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/roblox-hacked-version_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/how-to-get-your-roblox-account-back-if-hacked_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002ec8.bin
99343d97b4b5693bf30c37d6392be89b8886b45c79b83cccd4b83cb36f23501d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2EC8 22164 bytes
font_01_sfnt_off00005fd8.bin
f6f4b20314e55af6f091b6644652a950851bab4873bb22db542d485dc9339bf7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FD8 19396 bytes

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