Malicious PDF — malware analysis report

Static analysis result for SHA-256 8adb29a63d1c4ff5…

MALICIOUS

PDF

48.2 KB Created: 2021-06-02 10:46:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: bd024385ab5229bc5781e452e4a8b564 SHA-1: 08bb35c65d8749e6c4b1ed7112403d3e0bcd931e SHA-256: 8adb29a63d1c4ff56b7f05e2a85aa3fd988238bbd5e249245286636664e11bbe
82 Risk Score

Malware Insights

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

The PDF document contains a high-severity heuristic firing indicating it links to a "free generator / game hack" lure. The document body and numerous extracted URLs reinforce this theme, directing users to sites promising game-related cheats. The ML classifier also flagged this PDF as malicious. The primary IOC is the redirector URL, which likely serves as a gateway to a malicious payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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/artificial-intelligence-roblox-hack-streets-game-hack PDF link annotation
    • https://audev.com/images/roblox-promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • https://www.audev.com/images/free-robux-games-that-actually-work_GM431946152.pdfIn PDF document text
    • https://www.audev.com/images/roblox-redeem-robux_GM431946152.pdfIn PDF document text
    • https://www.audev.com/images/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • https://www.audev.com/images/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://audev.com/images/tiktok-free-views_GM835599320.pdfIn PDF document text
    • https://audev.com/images/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://www.audev.com/images/coin-master-free-spin-redeem-code_GM406889139.pdfIn PDF document text
    • https://www.audev.com/images/minecraft-free-trial_GM479516143.pdfIn PDF document text
    • https://audev.com/images/how-to-hack-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://www.audev.com/images/minecraft-servers-that-allow-hacks_GM479516143.pdfIn PDF document text
    • https://www.audev.com/images/coin-master-heaven-free-spins-today_GM406889139.pdfIn PDF document text
    • https://audev.com/images/free-robux-no-verification-needed_GM431946152.pdfIn PDF document text
    • https://www.audev.com/images/minecraft-the-complete-handbook-collection_GM479516143.pdfIn PDF document text
    • https://www.audev.com/images/how-to-get-free-robux-without-surveys_GM431946152.pdfIn PDF document text
    • https://www.audev.com/images/how-to-get-to-village-3-in-coin-master_GM406889139.pdfIn PDF document text
    • https://audev.com/images/free-robux-script_GM431946152.pdfIn PDF document text
    • https://audev.com/images/free-robux-no-human-verification-or-survey-or-download_GM431946152.pdfIn PDF document text
    • https://www.audev.com/images/free-robux-picture_GM431946152.pdfIn PDF document text
    • https://www.audev.com/images/where-tiktok-free-views-apk-download_GM835599320.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_004_off00005218.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5218 25640 bytes
SHA-256: 24359e170936a8d1dfd53e256c6ec5ab036899b85656822d9672ec0e1890d2c4
font_01_sfnt_off00008dfc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DFC 2984 bytes
SHA-256: 2df87bbe4e27b27e34c872c092d0522acd977d05f5cbde7ed5e1fdfeb59cb318
font_02_sfnt_off0000984a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x984A 18692 bytes
SHA-256: 8d524e8bda1a8c3210ec93d30a19c324f48a1bee31172420fb859274ca1d03af

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