Malicious PDF — malware analysis report

Static analysis result for SHA-256 14d73b9962ffbd02…

MALICIOUS

PDF

41.5 KB Created: 2021-05-17 09:33:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: bb4355df4906e8c3aaf2bd41fafddd85 SHA-1: aa151171c784ea9dca62602762baa2e70c2c392f SHA-256: 14d73b9962ffbd02a5c9086ac7be0c37227e03c70429c389ccff4539360aa6f3
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 0.9971

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/406889139/free-game-packs-for-coin-master-game-hack PDF link annotation
    • http://fradiomas.com/images/minecraft-classic-free_GM479516143.pdfIn PDF document text
    • http://fradiomas.com/images/free-robux-real_GM431946152.pdfIn PDF document text
    • http://fradiomas.com/images/avatar-the-last-airbender-roblox_GM431946152.pdfIn PDF document text
    • http://fradiomas.com/images/free-spin-app-coin-master_GM406889139.pdfIn PDF document text
    • http://fradiomas.com/images/minecraft-free-online-games_GM479516143.pdfIn PDF document text
    • http://fradiomas.com/images/minecraft-hacked-client-18_GM479516143.pdfIn PDF document text
    • http://fradiomas.com/images/coin-master-village-4_GM406889139.pdfIn PDF document text
    • http://fradiomas.com/images/free-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • http://fradiomas.com/images/tower-of-hell-roblox-hack_GM431946152.pdfIn PDF document text
    • http://fradiomas.com/images/no-scam-free-robux_GM431946152.pdfIn PDF document text
    • http://fradiomas.com/images/coin-master-free-coins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://fradiomas.com/images/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdfIn PDF document text
    • http://fradiomas.com/images/coinmaster-spin-ml-link_GM406889139.pdfIn PDF document text
    • http://fradiomas.com/images/orewards-com-free-robux_GM431946152.pdfIn PDF document text
    • http://fradiomas.com/images/free-spins-on-coin-master-game_GM406889139.pdfIn PDF document text
    • http://fradiomas.com/images/coin-master-free-spins-link-today-new-2021_GM406889139.pdfIn PDF document text
    • http://fradiomas.com/images/coin-master-free-shield_GM406889139.pdfIn PDF document text
    • http://fradiomas.com/images/get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://fradiomas.com/images/free-things-on-roblox_GM431946152.pdfIn PDF document text
    • http://fradiomas.com/images/minecraft-java-edition-download-free_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
stream_003_off0000478c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x478C 24708 bytes
SHA-256: 34151a4b26caf9d66fbf68d70d7ebc87e2ebb4a3c000fddb74ac714548a5b26f
font_01_sfnt_off00007ff4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FF4 18292 bytes
SHA-256: 588be6712b52f4dc3b6c5b8e7dc29f20d8b81f22195d0114e9c785dd726d1321

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