Malicious PDF — malware analysis report

Static analysis result for SHA-256 0928007dbcb65a34…

MALICIOUS

PDF

34.9 KB Created: 2021-06-21 04:07:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: b6c00f9ab9a7126af22e3c8514971533 SHA-1: 9e05112a3989d6d60d798c2c2fac9022c3497541 SHA-256: 0928007dbcb65a342a847770b5c02661208740034ed4b1287a3bb685b5ab9846
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs and a heuristic firing for a PDF link farm, indicating a likely attempt to direct users to malicious websites. The document body and extracted URLs suggest a lure related to game hacks and cheats, a common social engineering tactic. The ML classifier also strongly flagged this PDF as malicious, supporting the assessment of a malicious intent to download or redirect users to harmful content.

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/free-roblox-video-cracked-game-hack
    • http://www.himalassociation.org/himal/ck_image/files/roblox-robux-birth-day-hack_GM431946152.pdf
    • http://www.himalassociation.org/himal/ck_image/files/how-to-hack-a-roblox-account-with-cheat-engine_GM431946152.pdf
    • http://www.himalassociation.org/himal/ck_image/files/how-to-get-free-minecraft-coins_GM479516143.pdf
    • http://www.himalassociation.org/himal/ck_image/files/get-free-robux-if-you-finsh-ths-obby_GM431946152.pdf
    • http://www.himalassociation.org/himal/ck_image/files/free-spins-coin-master-hack-2021_GM406889139.pdf
    • http://www.himalassociation.org/himal/ck_image/files/how-to-get-minecraft-for-free-on-ipad_GM479516143.pdf
    • http://www.himalassociation.org/himal/ck_image/files/tiktok-for-free-install_GM835599320.pdf
    • http://www.himalassociation.org/himal/ck_image/files/coin-master-free-spins--coins-2021_GM406889139.pdf
    • http://www.himalassociation.org/himal/ck_image/files/roblox-april-fools-hack_GM431946152.pdf
    • http://www.himalassociation.org/himal/ck_image/files/daily-coin-master-link_GM406889139.pdf
    • http://www.himalassociation.org/himal/ck_image/files/is-there-any-way-to-get-free-robux_GM431946152.pdf
    • http://www.himalassociation.org/himal/ck_image/files/roblox-free-items_GM431946152.pdf
    • http://www.himalassociation.org/himal/ck_image/files/minecraft-life-hacks_GM479516143.pdf
    • http://www.himalassociation.org/himal/ck_image/files/coin-master-hack-apk-no-fb-login_GM406889139.pdf
    • http://www.himalassociation.org/himal/ck_image/files/how-to-get-free-robux-on-chromebook_GM431946152.pdf
    • http://www.himalassociation.org/himal/ck_image/files/minecraft-hacks-115-2_GM479516143.pdf
    • http://www.himalassociation.org/himal/ck_image/files/roblox-free-robux-codes_GM431946152.pdf
    • http://www.himalassociation.org/himal/ck_image/files/como-sacar-buen-puntaje-en-juego-coin-master-free-spins_GM406889139.pdf
    • http://www.himalassociation.org/himal/ck_image/files/coin-master-free-spins-blogspot_GM406889139.pdf
    • http://www.himalassociation.org/himal/ck_image/files/free-coin-master-coins_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000031f9.bin
e2d346a28f2474f7b9fc592b40f84cd2cef1a9e05336a81ec1564803985cbd81		 pdf-font-stream PDF embedded font (sfnt) at offset 0x31F9 22112 bytes
font_01_sfnt_off000062ea.bin
2ee500ce7a3be08f6f8abe53aa9c8368c2df645abbb4de51964cd2730564ae92		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62EA 19248 bytes

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