Malicious PDF — malware analysis report

Static analysis result for SHA-256 27c975ba81ae5736…

MALICIOUS

PDF

37.4 KB Created: 2021-05-19 01:03:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: c90302ad7dbb0c09fdfb0edc3b47de93 SHA-1: 3141f2d7bc81ec1ebce16c8796994c5c75fd9c39 SHA-256: 27c975ba81ae5736756e5577a6abc552d23ffdeba09e71ff0676dcf5f588e2cb
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to a malicious domain, masquerading as a free game hack or generator. The document body explicitly contains the URL and a call to action, 'CLICK HERE TO ACCESS MINECRAFT GENERATOR'. This indicates a phishing or scam attempt to lure users to malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier clean score 0.0334

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/windows-10-minecraft-free-with-java-game-hack In 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_003_off00003513.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3513 25396 bytes
SHA-256: 1e221c84a3ff5c82714c54149f9ac3c1f1c333e49265c986ccbf8894acf97aad
font_01_sfnt_off00006ef4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EF4 18972 bytes
SHA-256: 9d6b9c54d2a131b4fb739230225618891bd38f691818b7a412f84340786b5520

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