Malicious PDF — malware analysis report

Static analysis result for SHA-256 3770773e44c6c1d9…

MALICIOUS

PDF

43.1 KB Created: 2021-05-14 12:12:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 4c8ae04f9b8746fad853268a599336fd SHA-1: f10756e5a0c01bda7fe334e203cddb90d8e29c3d SHA-256: 3770773e44c6c1d9479e4e0817e616c379f0a17880012ac9d60a0e7b04206c36
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1539 Steal or Modify Data

The PDF document contains embedded URLs and a heuristic firing for an MFA lure, suggesting an attempt to phish for credentials or session tokens. The presence of a download button lure and external URIs pointing to game-related hacks indicates a likely attempt to trick the user into downloading a second-stage payload. The ML classifier strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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/free-roblox-toys-game-hack
    • https://www.elearning.man2banjar.com/__statics/gudangsoal/files/robux-matchcomfree-robux_GM431946152.pdf
    • https://www.elearning.man2banjar.com/__statics/gudangsoal/files/how-to-get-free-robux-without-downloading-apps-2021_GM431946152.pdf
    • https://www.elearning.man2banjar.com/__statics/gudangsoal/files/hack-client_GM479516143.pdf
    • https://www.elearning.man2banjar.com/__statics/gudangsoal/files/coins-master_GM406889139.pdf
    • https://www.elearning.man2banjar.com/__statics/gudangsoal/files/hack-my-spins-coin-master_GM406889139.pdf
    • https://www.elearning.man2banjar.com/__statics/gudangsoal/files/roblox-adopt-me-hacks-2021_GM431946152.pdf
    • https://www.elearning.man2banjar.com/__statics/gudangsoal/files/how-to-get-free-robux-no-human-verification_GM431946152.pdf
    • https://www.elearning.man2banjar.com/__statics/gudangsoal/files/roblox-inappropriate_GM431946152.pdf
    • https://www.elearning.man2banjar.com/__statics/gudangsoal/files/free-robux-promo-codes-2021_GM431946152.pdf
    • https://www.elearning.man2banjar.com/__statics/gudangsoal/files/real-free-robux-codes_GM431946152.pdf
    • https://www.elearning.man2banjar.com/__statics/gudangsoal/files/coinmasterhack-club_GM406889139.pdf
    • https://www.elearning.man2banjar.com/__statics/gudangsoal/files/hacks-master-coin_GM406889139.pdf
    • https://www.elearning.man2banjar.com/__statics/gudangsoal/files/free-minecraft-server_GM479516143.pdf
    • https://www.elearning.man2banjar.com/__statics/gudangsoal/files/como-hackear-el-juego-coin-master_GM406889139.pdf
    • https://www.elearning.man2banjar.com/__statics/gudangsoal/files/free-roblox-toy-codes-not-used_GM431946152.pdf
    • https://www.elearning.man2banjar.com/__statics/gudangsoal/files/minecraft-116-free_GM479516143.pdf
    • https://www.elearning.man2banjar.com/__statics/gudangsoal/files/free-robux-by-watching-ads_GM431946152.pdf
    • https://www.elearning.man2banjar.com/__statics/gudangsoal/files/how-to-hack-roblox-accounts-passwords_GM431946152.pdf
    • https://www.elearning.man2banjar.com/__statics/gudangsoal/files/coin-master-hack-to-get-free-spins_GM406889139.pdf
    • https://www.elearning.man2banjar.com/__statics/gudangsoal/files/how-do-i-get-free-coins-in-coin-master_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004b6b.bin
c1d435cf4e4c683751fa83c1f00beb93e75f8c1166478b184d645ea2ba0be8e6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4B6B 25484 bytes
font_01_sfnt_off00008688.bin
ced59fa1f5966ac3cb16d2fbea4d1e317d998f5f31502ffb274740285f9cbd45		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8688 18128 bytes

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