Malicious PDF — malware analysis report

Static analysis result for SHA-256 c340cce730741e3c…

MALICIOUS

PDF

35.1 KB Created: 2021-06-28 08:03:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 96755064500ec44b34020aed8b91f362 SHA-1: 0955354df8007f2eeee012d566e5ecf6af3a565c SHA-256: c340cce730741e3c9a288ceb01bb9324fd75bf98957ffef84554ace1f519372f
102 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs, many of which are structured as SEO-optimized links to game-related hacks and cheats. The presence of a critical heuristic firing for a 'PDF_SEO_LINK_FARM' and a high ML score strongly suggests malicious intent. The document body, though partially corrupted, contains references to 'cheats' and 'hacks', reinforcing the lure. The primary attack pattern involves tricking users into clicking these links, likely leading to the download of malware.

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/dll-file-cheats-on-on-roblox-game-hack
    • http://library.unissula.ac.id/fk/repository/coin-master-hack-generator-tool_GM406889139.pdf
    • http://library.unissula.ac.id/fk//repository/coin-master-free-spins-hack-iphone_GM406889139.pdf
    • http://library.unissula.ac.id/fk/repository/roblox-robux-promocodes-no-hack-free_GM431946152.pdf
    • http://library.unissula.ac.id/fk/repository/free-coins-and-spins-coin-master_GM406889139.pdf
    • http://library.unissula.ac.id/fe/repository/hack-for-roblox-a-bizzare-day_GM431946152.pdf
    • http://library.unissula.ac.id/fk/repository/free-robux-codes-september-2021_GM431946152.pdf
    • http://library.unissula.ac.id/fk/repository/free-robux-giveaway-no-hacks_GM431946152.pdf
    • http://library.unissula.ac.id/fk/repository/free-coin-and-spin-link_GM406889139.pdf
    • http://library.unissula.ac.id/fe/repository/free-roblox-glasses_GM431946152.pdf
    • http://library.unissula.ac.id/fk//repository/free-minecraft-skins-pe_GM479516143.pdf
    • http://library.unissula.ac.id/fk//repository/toolbox-for-minecraft-pe-ios_GM479516143.pdf
    • http://library.unissula.ac.id/fe/repository/roblox-install-free_GM431946152.pdf
    • http://library.unissula.ac.id/fk/repository/get-bucks-me-free-robux_GM431946152.pdf
    • http://library.unissula.ac.id/fk/repository/how-to-get-free-tiems-in-roblox_GM431946152.pdf
    • http://library.unissula.ac.id/fk//repository/how-to-get-free-coins-on-coin-master_GM406889139.pdf
    • http://library.unissula.ac.id/fk/repository/https-bloxy-site-free-robux_GM431946152.pdf
    • http://library.unissula.ac.id/fk/repository/how-to-change-your-name-on-roblox-for-free_GM431946152.pdf
    • http://library.unissula.ac.id/fk/repository/tthye-beeat-app-fo9r-free-robux_GM431946152.pdf
    • http://library.unissula.ac.id/fk/repository/coinmaster-hack_GM406889139.pdf
    • http://library.unissula.ac.id/fe/repository/como-hackear-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_off00003251.bin
b4f90f572b0cbd87061c801d000b78df1ecf0a35f405ad12b14d6796a5f212ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3251 22184 bytes
font_01_sfnt_off000063c2.bin
01dbb1bab20f5fd9c8b61165fd2021a411b2cddf513b38604f3aba2d11e7ccc3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63C2 19208 bytes

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