Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf315275bb77262d…

MALICIOUS

PDF

37.5 KB Created: 2021-05-20 13:01:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 2ef4708d580ac5947d84acec138eeb84 SHA-1: 5837f4e041a198c06cb9e6653b26c6cd8327df9d SHA-256: cf315275bb77262ddbed3f45244f5e649b91404feda641159cfc63857794674e
82 Risk Score

Malware Insights

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

The document contains multiple lures for in-game currency and free items, including a prominent call-to-action button and embedded URLs. The heuristic 'SE_MFA_LURE' suggests a potential credential harvesting attempt, possibly to steal session tokens or abuse multi-factor authentication. The ML classifier strongly flagged this PDF as malicious, and the presence of external URLs indicates a likely download or redirection to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

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/835599320/free-tiktok-fans-no-human-verification-or-downloading-apps-game-hack
    • http://mtsn-baranti.com/perpus/repository/coin-master-hack-no-verification-ios_GM406889139.pdf
    • http://mtsn-baranti.com/perpus/repository/pubg-uc-dundle_GM1330123889.pdf
    • http://mtsn-baranti.com/perpus/repository/coin-master-cheats-without-verification_GM406889139.pdf
    • http://mtsn-baranti.com/perpus/repository/games-that-give-free-robux_GM431946152.pdf
    • http://mtsn-baranti.com/perpus/repository/coin-master-hack-extension_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000034cf.bin
aeefea639ca3c55de409c42748379a74ec2e2b50e1c437e3fef4e93ccb20d156		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x34CF 24848 bytes
font_01_sfnt_off00006e48.bin
c23abd5df90a5b7093cc3e198b5bcaea5ee7ff11a274e14c679da15d1a345c21		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E48 19260 bytes

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