Malicious PDF — malware analysis report

Static analysis result for SHA-256 40d3012e0d40578a…

MALICIOUS

PDF

34.6 KB Created: 2021-06-18 04:11:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: e94274df7f41c8d5afb6eabdafed9d6b SHA-1: d86cd9844ca38433b7135afbf1a9747660a6dda7 SHA-256: 40d3012e0d40578ab706f3505f81588346b7e38cda9ed9a38258a20866d8a3e6
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 external links, many of which are SEO-optimized and point to pages offering game cheats and virtual currency. The presence of a 'download button' heuristic and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content. The document's structure and content suggest it is part of a phishing or scam campaign designed to trick users into downloading malware or visiting malicious sites.

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/non-sans-diamond-cheat-roblox-game-hack
    • http://repository.poliven.ac.id//repository/free-robux-no-survey-or-human-verification_GM431946152.pdf
    • http://repository.poliven.ac.id/repository/roblox-svg-free_GM431946152.pdf
    • http://repository.poliven.ac.id/repository/coin-master-fan-page-giveaway_GM406889139.pdf
    • http://repository.poliven.ac.id/repository/i-want-free-robux-no-human-verification_GM431946152.pdf
    • http://repository.poliven.ac.id//repository/roblox36com-free-robux_GM431946152.pdf
    • http://repository.poliven.ac.id/repository/how-to-get-free-rolls-on-roblox-elemental-wars_GM431946152.pdf
    • http://repository.poliven.ac.id/repository/www-roblox-com-free-robux_GM431946152.pdf
    • http://repository.poliven.ac.id/repository/free-robux-by-watching-ads_GM431946152.pdf
    • http://repository.poliven.ac.id/repository/coin-master-free-spins-and-coins-daily_GM406889139.pdf
    • http://repository.poliven.ac.id/repository/free-robux-without-human-verification-real_GM431946152.pdf
    • http://repository.poliven.ac.id/repository/is-there-any-tricks-or-working-hacks-for-coin-master_GM406889139.pdf
    • http://repository.poliven.ac.id/repository/games-like-bloxbutg-in-roblox-for-free_GM431946152.pdf
    • http://repository.poliven.ac.id/repository/rbx-free-robux_GM431946152.pdf
    • http://repository.poliven.ac.id/repository/are-games-on-roblox-free_GM431946152.pdf
    • http://repository.poliven.ac.id/repository/how-do-you-get-free-daily-spins-on-coin-master_GM406889139.pdf
    • http://repository.poliven.ac.id/repository/roblox-promo-codes-for-free-robux_GM431946152.pdf
    • http://repository.poliven.ac.id/repository/show-me-how-to-get-free-robux_GM431946152.pdf
    • http://repository.poliven.ac.id/repository/robux-hack-2021_GM431946152.pdf
    • http://repository.poliven.ac.id//repository/coin-master-free-spin-27_GM406889139.pdf
    • http://repository.poliven.ac.id//repository/roblox-generator-no-verification_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002e19.bin
04f5c26eda2762586917a09a7b2fabee751767270d706c39301d02e23da2ef52		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2E19 22752 bytes
font_01_sfnt_off00006100.bin
094ed7bc404cf8d84794426a5cfded510a60f918356b64325077881eb5a44611		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6100 19476 bytes

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