Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd29195ea9c31671…

MALICIOUS

PDF

37.3 KB Created: 2021-05-24 18:36:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: fcbdff6be1978440955ce29d79cfce71 SHA-1: 5d4bef3cc48e29c842cca5d55a67ec7bbc4c6177 SHA-256: cd29195ea9c31671ddf3cd2501f050a26820e69234bccbcbf6ddfff536734340
82 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs and a heuristic firing for an MFA lure, suggesting a phishing attempt to harvest credentials or abuse multi-factor authentication. The document body and embedded links point towards lures for game hacks or free items, a common tactic for social engineering. While no scripts were directly extracted, the presence of external links and the ML classifier's high confidence indicate a malicious intent to redirect the user to a potentially harmful resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7095

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-video-game-hack
    • http://dismarinamt.com.br/images/coin-master-jackpot-madness-hack_GM406889139.pdf
    • http://dismarinamt.com.br/images/free-spins-and-coins-on-coin-master_GM406889139.pdf
    • http://dismarinamt.com.br/images/coin-master-free-gift-links-2021_GM406889139.pdf
    • http://dismarinamt.com.br/images/coin-master-free-spins-and-coins-today_GM406889139.pdf
    • http://dismarinamt.com.br/images/coin-master-stop-attack-hack_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00002faa.bin
4241dad7d3523b6eb5375f5b01ffde3678c354b16c75b641319bfce532a18987		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2FAA 24344 bytes
font_01_sfnt_off0000678b.bin
c1a618813a64314343402b2ec738fc11c4c912460a4c7ae3029924d2f9a229cd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x678B 2896 bytes
font_02_sfnt_off00007171.bin
235ab7ad76fbd6febe16a9da060cefd2b4630fdfb887c9c84e88c01a352496ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7171 17764 bytes

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