Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ef610e8aaad9990…

MALICIOUS

PDF

42.2 KB Created: 2021-05-11 23:00:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 763268f312868d0d846edc046822846b SHA-1: 344722ee0c62228f88ab4768376d651f8adb39ec SHA-256: 3ef610e8aaad9990912ff216b60367ad785654d831f75f5bdf3b39068cdd4aa8
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-coin-master-game-game-hack PDF link annotation
    • https://javisintlmedia.com/images/can-i-get-robux-for-free_GM431946152.pdfIn PDF document text
    • https://javisintlmedia.com/images/free-robux-hack_GM431946152.pdfIn PDF document text
    • https://javisintlmedia.com/images/coin-master-cheats-free_GM406889139.pdfIn PDF document text
    • https://javisintlmedia.com/images/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • https://javisintlmedia.com/images/real-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://javisintlmedia.com/images/hack-mod-coin-master_GM406889139.pdfIn PDF document text
    • https://javisintlmedia.com/images/coin-master-hacking-news_GM406889139.pdfIn PDF document text
    • https://javisintlmedia.com/images/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • https://javisintlmedia.com/images/free-robux-microsoft_GM431946152.pdfIn PDF document text
    • https://javisintlmedia.com/images/games-that-give-free-robux_GM431946152.pdfIn PDF document text
    • https://javisintlmedia.com/images/coin-master-game-free-play-online_GM406889139.pdfIn PDF document text
    • https://javisintlmedia.com/images/free-robux-websites-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • https://javisintlmedia.com/images/free-printable-roblox-images_GM431946152.pdfIn PDF document text
    • https://javisintlmedia.com/images/block-best-robux_GM431946152.pdfIn PDF document text
    • https://javisintlmedia.com/images/how-to-make-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://javisintlmedia.com/images/can-you-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://javisintlmedia.com/images/how-to-get-free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://javisintlmedia.com/images/how-to-hack-a-roblox-account-easy_GM431946152.pdfIn PDF document text
    • https://javisintlmedia.com/images/coin-master-mod-apk-hack_GM406889139.pdfIn PDF document text
    • https://javisintlmedia.com/images/coin-master-online-hack-2021_GM406889139.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_off00004975.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4975 25656 bytes
SHA-256: e207c77ba35c34e2597ec48bcb87f70c3e0338d906006c12984601fb6c63ca3c
font_01_sfnt_off00008384.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8384 17968 bytes
SHA-256: 26c9c4b875abe90d5a203e632a25aafef6162dffda8186c61deacbdf7b71a521

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