Malicious PDF — malware analysis report

Static analysis result for SHA-256 6826598e10072fff…

MALICIOUS

PDF

45.7 KB Created: 2021-06-09 06:25:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: aaf156b067ee77c86abebcdb99332c57 SHA-1: 96eb0c4aa484cd6578331b9df6abeb08875f093c SHA-256: 6826598e10072fff38655ed9025041a97761cd0ef56ce340f3e17bab28065b71
102 Risk Score

Malware Insights

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

The PDF document contains numerous external links, many of which are structured as a "link farm" to potentially trick search engines. The document body and extracted URLs suggest a lure related to game cheats and in-game currency, such as "Cheat Engine Roblox Jailbreak". The presence of a "download button" heuristic further supports a malicious workflow aimed at enticing users to click through to external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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 https://netcdn.tw/app/431946152/cheat-engine-roblox-jailbreak-game-hack
    • http://katalog.stikesmukla.ac.id/repository/free-robux-site_GM431946152.pdf
    • http://katalog.stikesmukla.ac.id/repository/robuxmatch-com-free-robux_GM431946152.pdf
    • http://katalog.stikesmukla.ac.id/repository/coin-master-heaven-free-spins-today_GM406889139.pdf
    • http://katalog.stikesmukla.ac.id/repository/coin-master-free-coins-and-spins-app_GM406889139.pdf
    • http://katalog.stikesmukla.ac.id/repository/how-to-hack-coin-master-cheat-engine_GM406889139.pdf
    • http://katalog.stikesmukla.ac.id/repository/robloxheroxyz-free-robux_GM431946152.pdf
    • http://katalog.stikesmukla.ac.id/repository/games-that-give-you-free-robux_GM431946152.pdf
    • http://katalog.stikesmukla.ac.id/repository/how-to-play-minecraft-for-free-on-pc_GM479516143.pdf
    • http://katalog.stikesmukla.ac.id/repository/hack-minecraft_GM479516143.pdf
    • http://katalog.stikesmukla.ac.id/repository/coin-master-fan-club_GM406889139.pdf
    • http://katalog.stikesmukla.ac.id/repository/how-to-get-robux-for-free-2021_GM431946152.pdf
    • http://katalog.stikesmukla.ac.id/repository/coin-master-time-hack-ios_GM406889139.pdf
    • http://katalog.stikesmukla.ac.id/repository/coin-master-free-spins-2021-link_GM406889139.pdf
    • http://katalog.stikesmukla.ac.id/repository/how-to-use-patcheds-hacks-for-roblox_GM431946152.pdf
    • http://katalog.stikesmukla.ac.id/repository/free-robux-without-doing-anything_GM431946152.pdf
    • http://katalog.stikesmukla.ac.id/repository/hack-roblox-pc-download_GM431946152.pdf
    • http://katalog.stikesmukla.ac.id/repository/haktuts-coin-master-free-spin-link_GM406889139.pdf
    • http://katalog.stikesmukla.ac.id/repository/coin-master-coins-free_GM406889139.pdf
    • http://katalog.stikesmukla.ac.id/repository/free-spins-coin-master-links-blogspot_GM406889139.pdf
    • http://katalog.stikesmukla.ac.id/repository/coin-master-daily-free-spins-link-today-2021_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005062.bin
7de78d6a8da2198c2a1d17efa5de791aff14fb8c8c21cf5b277ec95d7be1551d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5062 26792 bytes
font_01_sfnt_off00008e14.bin
934faf927b7e45b5b5d62e49167ec24d8a8e99705bd72bd2c6e8eb2ec5620f22		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E14 19024 bytes

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