Malicious PDF — malware analysis report

Static analysis result for SHA-256 45f3573bc3a7fabb…

MALICIOUS

PDF

34.6 KB Created: 2021-06-25 22:03:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 1a470a41958358c9bf496db07534d2cd SHA-1: ae2ce8ccbe9d0dd03a5d4e4d5b87ff4c6b8c97f4 SHA-256: 45f3573bc3a7fabb0a5cb3d904831d3c1e8b0f9e63621a2b21517012d1dabae1
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The document contains numerous URLs and text referencing 'Robux hacks' and 'game cheats', indicating a lure for users to download malicious content. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs suggests it attempts to download a second-stage payload. No scripts were extracted, but the document's content and heuristic firings point to a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • 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/unlimted-robux-hack-game-hack
    • http://library.patria-artha.ac.id/repository/how-to-get-free-clothes-on-roblox_GM431946152.pdf
    • http://library.patria-artha.ac.id/repository/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdf
    • http://library.patria-artha.ac.id/repository/free-spins-coin-master-hack-2021_GM406889139.pdf
    • http://library.patria-artha.ac.id/repository/free-custom-minecraft-skins_GM479516143.pdf
    • http://library.patria-artha.ac.id/repository/hack-roblox-weight-lifting-simulator-3_GM431946152.pdf
    • http://library.patria-artha.ac.id/repository/commande-cmd-hack-roblox_GM431946152.pdf
    • http://library.patria-artha.ac.id/repository/how-to-know-if-someone-is-hacking-on-roblox_GM431946152.pdf
    • http://library.patria-artha.ac.id/repository/cheat-sur-roblox_GM431946152.pdf
    • http://library.patria-artha.ac.id/repository/try-coin-master-hack_GM406889139.pdf
    • http://library.patria-artha.ac.id/repository/roblox-jailbreak-hack-download_GM431946152.pdf
    • http://library.patria-artha.ac.id/repository/jp-youtube-roblox-how-to-get-free-robux_GM431946152.pdf
    • http://library.patria-artha.ac.id/repository/dll-hack-for-roblox-2021_GM431946152.pdf
    • http://library.patria-artha.ac.id/repository/descargar-hack-phantom-forces-roblox-creditos_GM431946152.pdf
    • http://library.patria-artha.ac.id/repository/free-robux-generator-2021_GM431946152.pdf
    • http://library.patria-artha.ac.id/repository/blogger-coin-master-free-spins_GM406889139.pdf
    • http://library.patria-artha.ac.id/repository/free-roblox-promo_GM431946152.pdf
    • http://library.patria-artha.ac.id/repository/free-coins-coin-master-2021_GM406889139.pdf
    • http://library.patria-artha.ac.id/repository/minecraft-hacks-list_GM479516143.pdf
    • http://library.patria-artha.ac.id/repository/get-robux-for-free-2021_GM431946152.pdf
    • http://library.patria-artha.ac.id/repository/coin-master-coins_GM406889139.pdf
    • http://library.patria-artha
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f29.bin
f479f401b2a483d40936369a6ee0d4496c7c7930cbed0facdbddb4c86b233669		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2F29 22428 bytes
font_01_sfnt_off000060e0.bin
0d9ed4cbef968558be2612cdad881db5149365311e6c22cf1169840f59d28baa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60E0 19452 bytes

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