Malicious PDF — malware analysis report

Static analysis result for SHA-256 afd997df61205a92…

MALICIOUS

PDF

44.6 KB Created: 2021-04-29 07:06:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 908cedc298d1318fb76d13194db4dc01 SHA-1: 7bd32ac162a57de840507e74b6940eb5366fb739 SHA-256: afd997df61205a923cfb1b07d2cb3a2b2c4a746d3a2b4276cfdc01c2afee97bf
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links and a call-to-action phrase, directing users to websites offering "game hacks" and "free generators" for Roblox. These links likely serve as a lure to download malicious payloads or redirect to phishing sites. No scripts were extracted, but the PDF structure and embedded URIs strongly indicate a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9863

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/431946152/hacking-my-roomates-roblox-account-game-hack PDF link annotation
    • https://www.malesse.com/ckfinder/userfiles/files/roblox-hack-for-android-apk.pdfIn PDF document text
    • https://www.malesse.com/ckfinder/userfiles/files/roblox-cheat-codes-for-robux-2021.pdfIn PDF document text
    • https://www.malesse.com/ckfinder/userfiles/files/free-roblox-accounts-with-robux-list.pdfIn PDF document text
    • https://www.malesse.com/ckfinder/userfiles/files/free-robux-on-ipad-pro.pdfIn PDF document text
    • https://www.malesse.com/ckfinder/userfiles/files/how-to-get-free-robux-ipad-only-2021.pdfIn PDF document text
    • https://www.malesse.com/ckfinder/userfiles/files/claim-gg-earn-free-robux-for-roblox.pdfIn PDF document text
    • https://www.malesse.com/ckfinder/userfiles/files/no-virus-hack-roblox.pdfIn PDF document text
    • https://www.malesse.com/ckfinder/userfiles/files/descargar-hack-pc-robux.pdfIn PDF document text
    • https://www.malesse.com/ckfinder/userfiles/files/how-to-get-gamepasses-for-free-on-roblox-2021.pdfIn PDF document text
    • https://www.malesse.com/ckfinder/userfiles/files/free-robux-xbox-one-2021.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000417a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x417A 27088 bytes
SHA-256: 36d78081486dd427e296af959b381e879c2bbd6df725029f19d4f9722b3f2a70
font_01_sfnt_off00007f48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F48 2844 bytes
SHA-256: baad2f3f6808f4af03fa9398e38c580c8d846f7f773a947d8cc1f39b2753d31a
font_02_sfnt_off00008909.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8909 19468 bytes
SHA-256: a1a887e945efd76bb3ded25fccc04bf95ecc62192e53c2c230ca69966a513fd2

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