Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9d2d89ea2da22a2…

MALICIOUS

PDF

31.6 KB Created: 2021-04-22 21:37:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 5e8977a263f0b17cc373b81d8d4d49d2 SHA-1: 5803c86599c692cadf800e742f6fa5f2e4ea7173 SHA-256: c9d2d89ea2da22a20835da74c5e3af7d35103ebb6a7af5c5d2219324fb21467e
74 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 3

  • 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.
  • 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://netsecure.pro/app/431946152/android-hack-roblox-game-hack PDF link annotation
    • http://shahriyarclimb.com/images/how-to-get-hammer-tool-roblox-hack.pdfIn PDF document text
    • http://shahriyarclimb.com/images/when-will-bloxburg-be-free-on-roblox.pdfIn PDF document text
    • http://shahriyarclimb.com/images/how-to-be-free-robux.pdfIn PDF document text
    • http://shahriyarclimb.com/images/how-to-dress-like-a-hacker-in-roblox.pdfIn PDF document text
    • http://shahriyarclimb.com/images/free-shirts-to-cop-roblox.pdfIn PDF document text
    • http://shahriyarclimb.com/images/how-to-get-free-admin-on-roblox-games.pdfIn PDF document text
    • http://shahriyarclimb.com/images/roblox-video-games-for-free.pdfIn PDF document text
    • http://shahriyarclimb.com/images/how-to-get-free-robux-dis.pdfIn PDF document text
    • http://shahriyarclimb.com/images/free-codes-in-roblox-working-2021.pdfIn PDF document text
    • http://shahriyarclimb.com/images/i-think-my-friend-has-been-hacked-on-roblox.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_003_off00003cae.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3CAE 24040 bytes
SHA-256: d22952b7ebba9d3496f478cac590f66bab35a7647252e2d8057515ff5b4d6e32
font_01_sfnt_off000073b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73B6 3884 bytes
SHA-256: 40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf

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