Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2e915f02fc203b5…

MALICIOUS

PDF

38.2 KB Created: 2021-05-21 15:02:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 8ddee8116d54c5937eb38870fc3fcef0 SHA-1: 9b19f1b336d589918cf9fba26436fbcdad876cf0 SHA-256: c2e915f02fc203b5edfdfcbea5c30bafad01c2f7ad7557d09401a0a82497b4b0
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to external websites, with a high-confidence heuristic flagging a 'game hack redirector' lure. The document body, though partially corrupted, suggests a theme of free game hacks, reinforcing the lure. The presence of embedded URLs and the ML classifier's strong positive prediction indicate a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9407

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/479516143/how-to-make-your-own-minecraft-pe-server-for-free-game-hack PDF link annotation
    • http://greenoase.be/images/how-do-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://greenoase.be/images/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://greenoase.be/images/roblox-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://greenoase.be/images/how-do-you-hack-roblox_GM431946152.pdfIn PDF document text
    • http://greenoase.be/images/how-to-get-free-robux-without-offers_GM431946152.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_off000038c6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x38C6 25936 bytes
SHA-256: dbdddb2c6859df906171ae3e9b8a6dbb522d0e899d7c9883af8afecc9974defc
font_01_sfnt_off00007360.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7360 18616 bytes
SHA-256: 7f1ed811d94b63e364c058ff1b231f2e8228461263d94dfafa7c0dfe2cf4e047

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