Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad694d71c8e97096…

MALICIOUS

PDF

34.5 KB Created: 2021-07-10 02:30:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 081d1759f31561cfa07ea80202d500ff SHA-1: 351826e1521e3c5df0781f669c5e9e0a8e0c2dbf SHA-256: ad694d71c8e97096a0c4339a7d7831f046c5418eac70a8d5801ce7e6b4d1b642
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous embedded links, including a primary URL pointing to a "hack-version-of-coin-master-apk-download-game-hack". The PDF also features a link farm heuristic, indicating a large number of external links, many of which are SEO-themed and point to game-related hacks and free currency. This suggests the document is designed to trick users into downloading potentially malicious software or visiting malicious sites under the guise of obtaining game cheats.

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.tw/app/406889139/hack-version-of-coin-master-apk-download-game-hack
    • https://www.knjizara-harfa.rs/files/magitan-roblox-hack_GM431946152.pdf
    • https://www.knjizara-harfa.rs/files/roblox-hacks-2021_GM431946152.pdf
    • https://www.knjizara-harfa.rs/files/how-to-download-minecraft-for-free_GM479516143.pdf
    • https://www.knjizara-harfa.rs/files/coin-master-free-spins-blogspot_GM406889139.pdf
    • https://www.knjizara-harfa.rs/files/can-you-really-hack-coin-master-ios_GM406889139.pdf
    • https://www.knjizara-harfa.rs/files/free-robux-giveaway-live_GM431946152.pdf
    • https://www.knjizara-harfa.rs/files/will-minecraft-dungeons-be-free_GM479516143.pdf
    • https://www.knjizara-harfa.rs/files/coin-master-free-spins-link-today-facebook_GM406889139.pdf
    • https://www.knjizara-harfa.rs/files/bloxpage-free-robux_GM431946152.pdf
    • https://www.knjizara-harfa.rs/files/coin-master-free-coins-and-spins-2021_GM406889139.pdf
    • https://www.knjizara-harfa.rs/files/free-robux-hack-2021-redeem-card-codes_GM431946152.pdf
    • https://www.knjizara-harfa.rs/files/free-robux-without-human-verification_GM431946152.pdf
    • https://www.knjizara-harfa.rs/files/how-to-get-free-skins-in-minecraft_GM479516143.pdf
    • https://www.knjizara-harfa.rs/files/treasure-hunrt-simulator-roblox-hack_GM431946152.pdf
    • https://www.knjizara-harfa.rs/files/gameoffice-net-hack-coin-master_GM406889139.pdf
    • https://www.knjizara-harfa.rs/files/free-avatar-roblox_GM431946152.pdf
    • https://www.knjizara-harfa.rs/files/legit-free-spins-coin-master_GM406889139.pdf
    • https://www.knjizara-harfa.rs/files/get-free-robux-com_GM431946152.pdf
    • https://www.knjizara-harfa.rs/files/how-to-get-free-items-on-roblox-with-inspect-element_GM431946152.pdf
    • https://www.knjizara-harfa.rs/files/free-coins-for-coin-master_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f41.bin
ef7ceed6d3773402a19f2db74692bf18c9f9adca52955dd18ff96327eba6bfb6
pdf-font-stream PDF embedded font (sfnt) at offset 0x2F41 22712 bytes
font_01_sfnt_off00006207.bin
0e76e7b24138cfa4d614eb6f056d3897d5c0eaba8dbb3d21cdf35042e4a6a81e
pdf-font-stream PDF embedded font (sfnt) at offset 0x6207 18892 bytes