Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e9b525a8ecdec8e…

MALICIOUS

PDF

34.4 KB Created: 2021-07-03 15:57:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 1a2cb17affce79a0ea756f358986f170 SHA-1: 172aa8c8573c84153d2d2319cbe484b35f6e5fb0 SHA-256: 2e9b525a8ecdec8ee3e8e24300cf9970609bc1b280cdc5e44c388bcff42543ed
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a launch action that directs the user to a URL promising game hacks, likely to download a malicious payload. The ML classifier strongly flagged this PDF as malicious. The presence of embedded URLs and a visual download lure further supports the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Launch action high PDF_LAUNCH
    PDF contains a /Launch action with an unresolved or extension-less target — treat as potentially dangerous
  • 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/431946152/reddit-hack-roblox-game-hack PDF link annotation
    • http://library.unissula.ac.id/fk/repository/obby-games-on-roblox-free-online-games_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/pokemon-go-free-balls_GM1094591345.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/report-roblox-hacker_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/robux-free-hack-2021_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/roblox-cheat-without-human-verification_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/lua-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/tiktok-views-free_GM835599320.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/hack-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/free-roblox-accounts-dantdm_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/aternos-free-minecraft-server_GM479516143.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/free-roblox_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/how-to-play-roblox-bloxburg-for-free_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/minecraft-classic-free_GM479516143.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/roblox-inappropriate-games_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/minecraft-wurst_GM479516143.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/slurp-roblox-cheat_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/launch-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/coin-master-time-hack-2021_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/coin-master-free-spins-reddit_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/robux-miner_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_off0000321b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x321B 21568 bytes
SHA-256: 4134e6bd1712bdf6af9d7427873c607c3aaec982d6034d00cb7ee88c7c821c2a
font_01_sfnt_off0000616a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x616A 19052 bytes
SHA-256: cde5ada36cc4c84dfa6535a8adf0b6c21d2a31093855a9459b1bc280886897e8

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