Malicious PDF — malware analysis report

Static analysis result for SHA-256 a13369865beb3aa3…

MALICIOUS

PDF

34.7 KB Created: 2021-07-01 16:25:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 95fc4442dca7a2d8a055657d89922e65 SHA-1: 7a996dea58fa602453a8d77c994de5003e93f88f SHA-256: a13369865beb3aa371d74617f47ea2122e2c1947a977795d7fe1d81d04419fe5
102 Risk Score

Malware Insights

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

The PDF document contains numerous links to external websites, many of which are structured as SEO-optimized PDF files promising hacks and free in-game currency. The presence of a "download button" heuristic and the ML classifier's high confidence score indicate a malicious intent to trick users into visiting these sites, likely leading to further malware downloads or scams. The document body itself contains a prominent URL related to "free Robux".

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/dhow-do-get-free-robux-game-hack
    • http://pustaka-smpn3tpi.com/repository/free-robux-no-human-verification-2021-or-survey-or-offers_GM431946152.pdf
    • http://pustaka-smpn3tpi.com/repository/hacks-master-coin_GM406889139.pdf
    • http://pustaka-smpn3tpi.com/repository/roblox-phantom-forces-hack-level_GM431946152.pdf
    • http://pustaka-smpn3tpi.com/repository/how-to-speed-hack-in-swordburst-2-in-roblox_GM431946152.pdf
    • http://pustaka-smpn3tpi.com/repository/appsmobinfo-coinmasterhack-coin-master-hack_GM406889139.pdf
    • http://pustaka-smpn3tpi.com/repository/100-free-spins-coin-master-2021_GM406889139.pdf
    • http://pustaka-smpn3tpi.com/repository/hack-roblox-counter-strike_GM431946152.pdf
    • http://pustaka-smpn3tpi.com//repository/daily-free-spins-on-coin-master_GM406889139.pdf
    • http://pustaka-smpn3tpi.com/repository/cheat-lib-roblox_GM431946152.pdf
    • http://pustaka-smpn3tpi.com//repository/coin-master-pet-food-free_GM406889139.pdf
    • http://pustaka-smpn3tpi.com/repository/how-do-i-get-free-robux_GM431946152.pdf
    • http://pustaka-smpn3tpi.com/repository/roblox-2021_GM431946152.pdf
    • http://pustaka-smpn3tpi.com/repository/free-robux-no-human-verification-or-survey-or-download_GM431946152.pdf
    • http://pustaka-smpn3tpi.com//repository/coin-master-free-spins-link-today-facebook_GM406889139.pdf
    • http://pustaka-smpn3tpi.com//repository/free-robux-come_GM431946152.pdf
    • http://pustaka-smpn3tpi.com/repository/has-my-roblox-account-been-hacked_GM431946152.pdf
    • http://pustaka-smpn3tpi.com/repository/how-to-get-hacker-mask-in-roblox_GM431946152.pdf
    • http://pustaka-smpn3tpi.com/repository/no-survey-roblox-free-robux_GM431946152.pdf
    • http://pustaka-smpn3tpi.com/repository/wahoo-gaming-co-free-robux_GM431946152.pdf
    • http://pustaka-smpn3tpi.com//repository/free-roblox-card-codes_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f9a.bin
57e132d91d9f1e4f5fb567d54a333e6399ec87667313a43068bd5e51a961c356		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2F9A 22448 bytes
font_01_sfnt_off000061de.bin
7433b3857f07a27617c7f54ff2df7732f1d8bb7505d3c6bf6b1808945c6b3df6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61DE 19320 bytes

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