Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed99d922c1577c93…

MALICIOUS

PDF

41.4 KB Created: 2021-04-22 21:35:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-23
MD5: d383d3dfaa560d023b1be68f6ee83780 SHA-1: a0be0bd3d49f64235fe4b5c566d237f689cff23e SHA-256: ed99d922c1577c93d5d1283b2b36e23b31da8000d453c313027461a339c82ac6
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

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

Machine Learning

  • Nyx PDF Classifier malicious score 0.9941

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://netsecure.pro/app/431946152/roblox-redwood-prison-hacks-game-hack PDF link annotation
    • http://blueduna.com/images/obby-gives-you-free-robux-no-password-required-2021-roblox.pdfIn PDF document text
    • http://blueduna.com/images/builders-club-hack-download-roblox.pdfIn PDF document text
    • http://blueduna.com/images/roblox-jailbreak-cheats-noclip.pdfIn PDF document text
    • http://blueduna.com/images/roblox-hack-05-2021.pdfIn PDF document text
    • http://blueduna.com/images/free-robux-card-codes-2021.pdfIn PDF document text
    • http://blueduna.com/images/how-to-get-1m-robux-for-free-2021.pdfIn PDF document text
    • http://blueduna.com/images/alone-battle-roytale-roblox-hacks-script-copy.pdfIn PDF document text
    • http://blueduna.com/images/how-to-get-free-robux-on-roblox-2021-hack.pdfIn PDF document text
    • http://blueduna.com/images/free-robux-xyz.pdfIn PDF document text
    • http://blueduna.com/images/swat-for-free-on-jail-break-roblox.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000042e4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x42E4 26512 bytes
SHA-256: 2c2f108c15fe638e955bf081b7fff30fda360b7afc7ba8ad9ed36fc3b704e3b9
font_01_sfnt_off00007e56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E56 18796 bytes
SHA-256: 5687dff0ec42be49144fca7dcfe8fb9c2ac2c8becc3cc1a88f6226c1e952c087

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