Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c6bdc1573b3aec5…

MALICIOUS

PDF

35.4 KB Created: 2021-05-23 11:03:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 40b4cd8ff95c5bce1e0a840cf2a26ee3 SHA-1: 98e0532ee8f0ffc3467a08932fe4ef2aa88b645d SHA-256: 0c6bdc1573b3aec5b3967afa3a4e9060bfb7ee9ee761d4c04d4f819ed6b839a1
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 high-confidence heuristic firing for a 'game hack' redirect lure. The document body also contains phrases like 'CLICK HERE TO ACCESS COIN MASTER GENERATOR', indicating a social engineering attempt to trick the user into visiting a malicious site. The primary URL points to a site offering 'coin-master-free-coins-and-spins-game-hack', suggesting a phishing or scamming attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9492

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • 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-free-coins-and-spins-game-hack PDF link annotation
    • http://autoskola-scp.com/files/how-to-get-free-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/coin-master-ids-for-free-spins_GM406889139.pdfIn PDF document text
    • http://autoskola-scp.com/files/what-is-robux-in-roblox_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/how-to-scam-on-roblox_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/free-spins-coin-master-app_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off0000328a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x328A 24140 bytes
SHA-256: 0baa39ef9909f8caf9a7fb11a1fbc1dd5bc5e13bfeb587334007c3ac7248fde0
font_01_sfnt_off00006999.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6999 18060 bytes
SHA-256: f77ee24e01944806ea28e16fd73427a54f7109e241804df06ce657d8c6d11cfb

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