Malicious PDF — malware analysis report

Static analysis result for SHA-256 66209c5ce0b7facb…

MALICIOUS

PDF

41.3 KB Created: 2021-05-19 22:15:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: a1f4b304b5cb8affe982c1377da8478e SHA-1: 50d939c8810139b6a4babca3fac0134459cb3e56 SHA-256: 66209c5ce0b7facb7739693a08be7e5b0e8c7bd144820cce451e40f20c801ae5
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/1330123889/pubg-uc-exchange-game-hack PDF link annotation
    • http://fa-deco.com/images/download-coin-master-hack-mod-apk_GM406889139.pdfIn PDF document text
    • http://fa-deco.com/images/get-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://fa-deco.com/images/free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • http://fa-deco.com/images/robux-for-surveys_GM431946152.pdfIn PDF document text
    • http://fa-deco.com/images/how-to-get-20210-robux-for-free_GM431946152.pdfIn PDF document text
    • http://fa-deco.com/images/easypoints-gg-roblox_GM431946152.pdfIn PDF document text
    • http://fa-deco.com/images/fbchampion-com_GM406889139.pdfIn PDF document text
    • http://fa-deco.com/images/minecraft-cheats-pc-2021_GM479516143.pdfIn PDF document text
    • http://fa-deco.com/images/is-there-a-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://fa-deco.com/images/coin-master-hack-apk-2021-download_GM406889139.pdfIn PDF document text
    • http://fa-deco.com/images/whats-robux_GM431946152.pdfIn PDF document text
    • http://fa-deco.com/images/can-i-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://fa-deco.com/images/can-you-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://fa-deco.com/images/coin-master-free-coins-link-2021_GM406889139.pdfIn PDF document text
    • http://fa-deco.com/images/daily-coin-master-link_GM406889139.pdfIn PDF document text
    • http://fa-deco.com/images/rblx-city-free-robux_GM431946152.pdfIn PDF document text
    • http://fa-deco.com/images/free-robux-scam_GM431946152.pdfIn PDF document text
    • http://fa-deco.com/images/wurst-mc_GM479516143.pdfIn PDF document text
    • http://fa-deco.com/images/blox-rewards_GM431946152.pdfIn PDF document text
    • http://fa-deco.com/images/free-robux-stream_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 3

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_off000046b5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x46B5 24424 bytes
SHA-256: bf3a94f38eeb7c5b712e11d8fb700a5e97f680a0a2cc1c75e891c674a56de356
font_01_sfnt_off00007e69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E69 18500 bytes
SHA-256: 6d3d25c0d59e681562f3ab545cbdd905237b4c10d0d72a28c54b4daaf8bda8e0

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