Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc5f4f76ac4f9d8a…

MALICIOUS

PDF

49.0 KB Created: 2021-05-13 17:36:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: d48a9896c35e4c921493070d1db65876 SHA-1: cc3d3d0cf1955bf26c84fb2f915b483fe7ca82a9 SHA-256: bc5f4f76ac4f9d8a2f0de6808b79ac19e8ffb864d33f86a147252563328f276c
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The document contains a lure for 'Coin Master' free spins and coins, a common social engineering tactic. It includes multiple embedded URLs pointing to potentially malicious sites, and a critical heuristic firing for 'Secret Recovery Lure' suggests it may attempt to harvest credentials or sensitive information. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8642

Heuristics 4

  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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/406889139/coin-master-daily-gift-free-spins-and-coins-link-game-hack
    • http://pet.nfe.go.th/petnfe/userfiles/files/free-spin-coin-master-2021-link_GM406889139.pdf
    • http://pet.nfe.go.th/petnfe/userfiles/files/watch-videos-for-robux_GM431946152.pdf
    • http://pet.nfe.go.th/petnfe/userfiles/files/free-spin-coin-master-2021_GM406889139.pdf
    • http://pet.nfe.go.th/petnfe/userfiles/files/coin-master-card-collection-hack-2021_GM406889139.pdf
    • http://pet.nfe.go.th/petnfe/userfiles/files/how-to-get-free-robux-easy_GM431946152.pdf
    • http://pet.nfe.go.th/petnfe/userfiles/files/free-coins-coin-master_GM406889139.pdf
    • http://pet.nfe.go.th/petnfe/userfiles/files/coin-master-free-daily-spins-today_GM406889139.pdf
    • http://pet.nfe.go.th/petnfe/userfiles/files/free-robux-scam_GM431946152.pdf
    • http://pet.nfe.go.th/petnfe/userfiles/files/free-coins-coin-master-spins_GM406889139.pdf
    • http://pet.nfe.go.th/petnfe/userfiles/files/free-robux-no-human-verification-or-survey-or-download_GM431946152.pdf
    • http://pet.nfe.go.th/petnfe/userfiles/files/coin-master-fun-hack-online_GM406889139.pdf
    • http://pet.nfe.go.th/petnfe/userfiles/files/daily-coin-master-free-spins_GM406889139.pdf
    • http://pet.nfe.go.th/petnfe/userfiles/files/minecraft-menu_GM479516143.pdf
    • http://pet.nfe.go.th/petnfe/userfiles/files/free-robux-thumbnail_GM431946152.pdf
    • http://pet.nfe.go.th/petnfe/userfiles/files/roblox-hack-codes_GM431946152.pdf
    • http://pet.nfe.go.th/petnfe/userfiles/files/coin-master-hack-cheat-generator-d_GM406889139.pdf
    • http://pet.nfe.go.th/petnfe/userfiles/files/how-to-make-a-minecraft-server-for-free-java_GM479516143.pdf
    • http://pet.nfe.go.th/petnfe/userfiles/files/free-robux-generator-no-human-verification-2021_GM431946152.pdf
    • http://pet.nfe.go.th/petnfe/userfiles/files/free-robux-ad_GM431946152.pdf
    • http://pet.nfe.go.th/petnfe/userfiles/files/coin-master-hack-without-verification-code_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004b33.bin
a17f668139a4fa0eeccd57c1299e4471e216d63c79aa41282fb7b8ef83b6274e		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B33 25180 bytes
font_01_sfnt_off000083fe.bin
a17c2a746d49ac23b23e38a371e32fddecfcd91b10cf42ff6155bff6b8a07e91		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83FE 4028 bytes
font_02_sfnt_off0000919f.bin
6fd7c7f447d66842f81aa8cf197935b17f22157d0c7e9f95622df1b5b4ddf530		 pdf-font-stream PDF embedded font (sfnt) at offset 0x919F 2788 bytes
font_03_sfnt_off00009b8f.bin
366d9c9b3cd0388843e044af578ba3ade018a9e96efb4083e0cc5bdd66e71c38		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9B8F 18652 bytes

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