Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d6254233a1e0044…

MALICIOUS

PDF

33.7 KB Created: 2021-06-22 00:05:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 04ef4c9954abf93eb7f729369094fb0f SHA-1: 8bc017b0d71c3cab010e6715e9d0b95350211193 SHA-256: 9d6254233a1e00447d293c8e8b886e085e6c0bec23aaae442b51fcabd0a5a383
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs, with a primary link pointing to a 'robux-generatr-hack-2021-game-hack'. Heuristics indicate this is a lure for a game hack, likely leading to a malicious download or phishing attempt. The document's content and structure strongly suggest a social engineering tactic to trick users into clicking malicious links, aligning with spearphishing attachment techniques.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/robux-generatr-hack-2021-game-hack PDF link annotation
    • http://www.gyfunnews.com/ckfinder/userfiles/files/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://www.gyfunnews.com/ckfinder/userfiles/files/free-spins-and-coins-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://www.gyfunnews.com/ckfinder/userfiles/files/how-to-get-free-robux-no-inspect-or-waiting_GM431946152.pdfIn PDF document text
    • http://www.gyfunnews.com/ckfinder/userfiles/files/how-do-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.gyfunnews.com/ckfinder/userfiles/files/free-robux-codes-no-survey-2021_GM431946152.pdfIn PDF document text
    • http://www.gyfunnews.com/ckfinder/userfiles/files/how-to-get-free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.gyfunnews.com/ckfinder/userfiles/files/minecraft-pe-hacks-ios_GM479516143.pdfIn PDF document text
    • http://www.gyfunnews.com/ckfinder/userfiles/files/robux-com-free_GM431946152.pdfIn PDF document text
    • http://www.gyfunnews.com/ckfinder/userfiles/files/how-to-get-free-cards-sets-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.gyfunnews.com/ckfinder/userfiles/files/how-to-get-free-robux-without-verification-or-surveys_GM431946152.pdfIn PDF document text
    • http://www.gyfunnews.com/ckfinder/userfiles/files/alo-roblox-free-items_GM431946152.pdfIn PDF document text
    • http://www.gyfunnews.com/ckfinder/userfiles/files/ways-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.gyfunnews.com/ckfinder/userfiles/files/minecraft-112-2-hacked-client_GM479516143.pdfIn PDF document text
    • http://www.gyfunnews.com/ckfinder/userfiles/files/how-to-get-minecraft-bedrock-for-free_GM479516143.pdfIn PDF document text
    • http://www.gyfunnews.com/ckfinder/userfiles/files/how-to-get-minecraft-java-free_GM479516143.pdfIn PDF document text
    • http://www.gyfunnews.com/ckfinder/userfiles/files/coin-master-admin-free-spins_GM406889139.pdfIn PDF document text
    • http://www.gyfunnews.com/ckfinder/userfiles/files/free-executors-for-roblox_GM431946152.pdfIn PDF document text
    • http://www.gyfunnews.com/ckfinder/userfiles/files/minecraft-java-for-free_GM479516143.pdfIn PDF document text
    • http://www.gyfunnews.com/ckfinder/userfiles/files/how-to-get-free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • http://www.gyfunnews.com/ckfinder/userfiles/files/minecraft-tower-defense-hacked_GM479516143.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
font_00_sfnt_off00002e32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E32 21716 bytes
SHA-256: b97355d0625694b74b5f6cfbade072d81a486bb7156dc2bb342a7fdf5a62774f
font_01_sfnt_off00005df5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DF5 19228 bytes
SHA-256: 49da48479ac4894d3ed1a4e435434018edd10fd8800aed5f5fb6da45e4d29d6f

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