Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed2f30601edf9a44…

MALICIOUS

PDF

42.5 KB Created: 2021-05-12 05:03:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: d2ab3a6928c7bb343b2f863c55ca0b6b SHA-1: 0fb595420572ef4ace7dafee6c37482aa32254c6 SHA-256: ed2f30601edf9a44a29a97e77503e273a7a26b590fc7d7ad45c5879c3c046ae2
82 Risk Score

Malware Insights

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

The PDF document contains multiple embedded URLs and a call-to-action to download content, likely a second-stage payload. The heuristic indicating a security bypass instruction to disable antivirus software further supports a malicious intent. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • Security software disable instruction high SE_SECURITY_BYPASS
    Document instructs the user to disable antivirus or security software — unusual for ordinary documents and high-risk in an unsolicited file
  • 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/431946152/how-to-get-more-robux-for-free-game-hack
    • http://pustaka-smpn3tpi.com/repository/how-to-get-free-hair-on-roblox_GM431946152.pdf
    • http://pustaka-smpn3tpi.com/repository/coin-master-website_GM406889139.pdf
    • http://pustaka-smpn3tpi.com//repository/robux-best_GM431946152.pdf
    • http://pustaka-smpn3tpi.com//repository/lots-of-robux_GM431946152.pdf
    • http://pustaka-smpn3tpi.com/repository/coin-master-gold-cards-hack-2021_GM406889139.pdf
    • http://pustaka-smpn3tpi.com/repository/spin-and-coin_GM406889139.pdf
    • http://pustaka-smpn3tpi.com/repository/free-minecraft-skins-pe_GM479516143.pdf
    • http://pustaka-smpn3tpi.com//repository/earn-robux_GM431946152.pdf
    • http://pustaka-smpn3tpi.com//repository/earn-free-robux_GM431946152.pdf
    • http://pustaka-smpn3tpi.com//repository/how-to-create-group-in-coin-master-free-spins_GM406889139.pdf
    • http://pustaka-smpn3tpi.com/repository/free-spins-coin-master-hack-2021_GM406889139.pdf
    • http://pustaka-smpn3tpi.com/repository/minecraft-free-ios-no-verification_GM479516143.pdf
    • http://pustaka-smpn3tpi.com//repository/coin-master-free-spins-link-blogspot_GM406889139.pdf
    • http://pustaka-smpn3tpi.com/repository/free-robux-hacks-no-verification_GM431946152.pdf
    • http://pustaka-smpn3tpi.com//repository/coin-master-free-pet-food_GM406889139.pdf
    • http://pustaka-smpn3tpi.com//repository/how-to-hack-someones-roblox-account_GM431946152.pdf
    • http://pustaka-smpn3tpi.com//repository/free-robux-groups-2021_GM431946152.pdf
    • http://pustaka-smpn3tpi.com//repository/coin-master-free-spins-hack-but-no-surveys_GM406889139.pdf
    • http://pustaka-smpn3tpi.com//repository/avatar-de-roblox_GM431946152.pdf
    • http://pustaka-smpn3tpi.com/repository/roblox-hack-me-robux_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000046e3.bin
3dae3d70c9bc17cd782324deb997aea721c894d314d5ab0f02ea88a54f40ce48		 pdf-font-stream PDF embedded font (sfnt) at offset 0x46E3 26032 bytes
font_01_sfnt_off0000831a.bin
444f48c68388f928a3d871611d0873030738946ead4f6691d00c6869f71b1127		 pdf-font-stream PDF embedded font (sfnt) at offset 0x831A 18480 bytes

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