Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c2eb3595d72d1bb…

MALICIOUS

PDF

33.5 KB Created: 2021-07-02 03:03:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: a5a4e7e3468c405d184c93289be1c6c1 SHA-1: d32888351a64e3f944803e4e7c19d1dd2934b481 SHA-256: 2c2eb3595d72d1bb6c4d8cdca0b07cec5fd8754f690b3499fb81af1d11e753dd
102 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to other PDFs hosted on a link farm. The document body and embedded links suggest a lure for users seeking game cheats or hacks, specifically for Roblox and Coin Master. The primary malicious behavior observed is the distribution of links to potentially harmful content, likely designed to lead users to download malware or engage in other malicious activities.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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-game-for-computer-game-hack
    • http://library.itekes-bali.ac.id/repository/free-coins-and-spins-in-coin-master_GM406889139.pdf
    • http://library.itekes-bali.ac.id/repository/coin-master-root-hack_GM406889139.pdf
    • http://library.itekes-bali.ac.id/repository/roblox-hack-steal-robux_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/roblox-troll-players-script-hack_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/1-step-to-get-free-robux_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/how-to-get-free-roblox_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/how-to-make-free-robux_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/royl-high-roblox-play-roblx-for-free_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/free-roblox-accounts-with-bloz_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/free-online-generator-for-coin-master_GM406889139.pdf
    • http://library.itekes-bali.ac.id/repository/free-coins-coin-master-blog_GM406889139.pdf
    • http://library.itekes-bali.ac.id/repository/roblox-jailbreak-hacker-cage_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/link-for-free-spins-on-coin-master_GM406889139.pdf
    • http://library.itekes-bali.ac.id/repository/robux-for-kids_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/free-robux-glitch-2021_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/how-to-get-free-minecraft-coins_GM479516143.pdf
    • http://library.itekes-bali.ac.id/repository/how-to-get-free-adminon-roblox-for-any-game_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/5-games-that-will-give-you-free-robux_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/free-spins-coin-master-hack-2021_GM406889139.pdf
    • http://library.itekes-bali.ac.id/repository/roblox-free-robux-obby-game_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002b65.bin
199ddef39c59c1f795824b31d2101754572ed94925c982b1eea8d3085afff98e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B65 22480 bytes
font_01_sfnt_off00005d3e.bin
06b2260558ba696a336e31c59dd213f7c3a182423a1aa7867357c18a58045163		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D3E 19332 bytes

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