Malicious PDF — malware analysis report

Static analysis result for SHA-256 be20d20117c3a871…

MALICIOUS

PDF

33.8 KB Created: 2021-06-29 11:32:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 3365d3269644df782f35a71785d533b4 SHA-1: 73f482a917ae6296d3ad1ae52e4db333045d1465 SHA-256: be20d20117c3a87144ac2d47e315af51f465e0d5db2d6a6259e3001878eae8cc
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of external links, many of which are SEO-optimized and point to game-related cheats and hacks, such as 'Free Robux'. This indicates a likely attempt to lure users to malicious websites or downloaders. The presence of a visual download button further supports this phishing-like lure. No scripts were extracted, but the overall structure and content strongly suggest a social engineering attack.

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/free-robux-may-2021-game-hack
    • http://perpusfkip.upstegal.ac.id/repository/do-roblox-console-hacks-work_GM431946152.pdf
    • http://perpusfkip.upstegal.ac.id/repository/what-app-do-you-use-to-get-free-robux_GM431946152.pdf
    • http://perpusfkip.upstegal.ac.id/repository/best-free-roblox-outfitas_GM431946152.pdf
    • http://perpusfkip.upstegal.ac.id/repository/how-to-get-free-robux-without-verifying-2021_GM431946152.pdf
    • http://perpusfkip.upstegal.ac.id/repository/will-minecraft-ever-be-free_GM479516143.pdf
    • http://perpusfkip.upstegal.ac.id/repository/super-hero-adventures-online-roblox-hack_GM431946152.pdf
    • http://perpusfkip.upstegal.ac.id/repository/free-robux-no-human-verification-or-survey-2021_GM431946152.pdf
    • http://perpusfkip.upstegal.ac.id/repository/fat-dude-trying-to-get-free-robux_GM431946152.pdf
    • http://perpusfkip.upstegal.ac.id/repository/coin-master-hack-progamers_GM406889139.pdf
    • http://perpusfkip.upstegal.ac.id/repository/roblox-id-code-for-cheats-code-for-hoes_GM431946152.pdf
    • http://perpusfkip.upstegal.ac.id/repository/how-to-get-free-vip-on-roblox-neverland-lagoon_GM431946152.pdf
    • http://perpusfkip.upstegal.ac.id/repository/coin-master-hack-game-download-ios_GM406889139.pdf
    • http://perpusfkip.upstegal.ac.id/repository/roblox-free-working-gift-card-2021_GM431946152.pdf
    • http://perpusfkip.upstegal.ac.id/repository/free-roblox_GM431946152.pdf
    • http://perpusfkip.upstegal.ac.id/repository/happymod-roblox-hack_GM431946152.pdf
    • http://perpusfkip.upstegal.ac.id/repository/coin-master-guide-to-free-spins-and-rewards_GM406889139.pdf
    • http://perpusfkip.upstegal.ac.id/repository/free-dominus-roblox_GM431946152.pdf
    • http://perpusfkip.upstegal.ac.id/repository/free-robux-hack-no-verification_GM431946152.pdf
    • http://perpusfkip.upstegal.ac.id/repository/how-to-customize-roblox-character-free_GM431946152.pdf
    • http://perpusfkip.upstegal.ac.id/repository/coin-master-free-spin-link-today-2021_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002d6b.bin
3ac633fe382ef4f116b26d344a6530dd1c8a167e16acbc858df7383a5c396ac6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D6B 21812 bytes
font_01_sfnt_off00005d70.bin
0f6b5990bb62b27ab3232b721c5c08cc40207b72b836aef1b989da2f1c6fedf5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D70 19492 bytes

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