Malicious PDF — malware analysis report

Static analysis result for SHA-256 232192dbe36fb4b0…

MALICIOUS

PDF

42.4 KB Created: 2021-05-14 11:34:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: ac824794c3a1629ba0b1d6070dd58feb SHA-1: 59d6709f3c64b110e3e420ebcd6f512ee854f78a SHA-256: 232192dbe36fb4b086ea027b5f26eb258bbcb406b6d7a68e399a6fbe512ead47
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a large number of external links, many of which are hosted on `firesafetyservices.biz` and appear to be part of a link farm designed to attract users searching for game hacks and cheats. The ML classifier also flagged this PDF as malicious. The presence of embedded URLs and the link farm structure suggest an attempt to redirect users to malicious sites or download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.xyz/app/406889139/haktuts-coin-master-free-daily-spins-game-hack
    • http://firesafetyservices.biz/images/free-roblox-accounts_GM431946152.pdf
    • http://firesafetyservices.biz/images/roblox-apocalypse-rising-hack_GM431946152.pdf
    • http://firesafetyservices.biz/images/minecraft-pocket-edition-free-ios_GM479516143.pdf
    • http://firesafetyservices.biz/images/minecraft-windows-10-edition-hacked-client_GM479516143.pdf
    • http://firesafetyservices.biz/images/coin-master-mod-apk-free-download_GM406889139.pdf
    • http://firesafetyservices.biz/images/coin-master-free-spins-and-coins_GM406889139.pdf
    • http://firesafetyservices.biz/images/public-enemy-sun-prairie-coin-master-free-spins_GM406889139.pdf
    • http://firesafetyservices.biz/images/how-to-hack-someones-roblox-account-2021_GM431946152.pdf
    • http://firesafetyservices.biz/images/hack-coin-master-game_GM406889139.pdf
    • http://firesafetyservices.biz/images/toolbox-for-mcpe_GM479516143.pdf
    • http://firesafetyservices.biz/images/roblox-free-robux-no-human-verification_GM431946152.pdf
    • http://firesafetyservices.biz/images/what-is-a-minecraft-client_GM479516143.pdf
    • http://firesafetyservices.biz/images/coin-master-free-spins-link-2021-download_GM406889139.pdf
    • http://firesafetyservices.biz/images/blox-world-free-robux_GM431946152.pdf
    • http://firesafetyservices.biz/images/how-to-get-free-robux-with-no-verification_GM431946152.pdf
    • http://firesafetyservices.biz/images/coin-master-daily-spin-free_GM406889139.pdf
    • http://firesafetyservices.biz/images/coin-master-free-spins-link-haktuts_GM406889139.pdf
    • http://firesafetyservices.biz/images/roblox-arsenal-hack_GM431946152.pdf
    • http://firesafetyservices.biz/images/robux-free-co_GM431946152.pdf
    • http://firesafetyservices.biz/images/cute-free-hair-on-roblox_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000049f0.bin
1dfe15d806ee0f37c022ee6ab122b45ae532a9c2110ac6bd818ebdbafde09d56
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49F0 24776 bytes
font_01_sfnt_off0000829c.bin
ded7de44f7a870837d4ef416985ae0b9ef78dce3540f45b1558d033e63b05ca7
pdf-font-stream PDF embedded font (sfnt) at offset 0x829C 18620 bytes