Malicious PDF — malware analysis report

Static analysis result for SHA-256 b07d45b0d5e3efa7…

MALICIOUS

PDF

36.8 KB Created: 2021-05-11 04:01:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: b680657ed01e534fa052dbf788b1ffbb SHA-1: 960b6e5f7f0ec848543763953de7aa9a64d1f576 SHA-256: b07d45b0d5e3efa7936c603bc809844b26af11d8570b42e36fb3b208fa60b768
92 Risk Score

Malware Insights

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

The PDF contains a high-confidence heuristic indicating a brand-impersonation credential phishing lure, specifically impersonating Microsoft. The embedded link, 'https://netcdn.xyz/app/479516143/how-do-you-hack-minecraft-game-hack', is presented as a 'free generator / game hack' and acts as a call-to-action. This suggests the document's primary purpose is to trick users into clicking the malicious link, likely for phishing or to download a secondary payload.

Machine Learning

  • Nyx PDF Classifier clean score 0.0334

Heuristics 5

  • 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.
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://netcdn.xyz/app/479516143/how-do-you-hack-minecraft-game-hack.
  • 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/479516143/how-do-you-hack-minecraft-game-hack PDF link annotation
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000357d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x357D 24908 bytes
SHA-256: 975631e1e713066e8a7a21fb6c851266ca1616f30d9c5b8507b3008ef6c08514
font_01_sfnt_off00006e07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E07 18512 bytes
SHA-256: 3291eec6b86d740bab8ba76643ef34913a0c4ab2a930ce2f65b8b3fd60c7ead6

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