Malicious PDF — malware analysis report

Static analysis result for SHA-256 00fd9cd3e05edb3d…

MALICIOUS

PDF

44.5 KB Created: 2021-06-03 04:07:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 30ac73cc65517ed9152c0f0653bda9f7 SHA-1: 4df68c7cfe9b23f7ed52bb21869ce0af083ae60f SHA-256: 00fd9cd3e05edb3d63b5182399b757ccda08c949a9fb87f3ff455aab6e8f05f8
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 0.9865

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.online/app/406889139/download-hacked-games-coin-master-game-hack PDF link annotation
    • http://proyetec.com.co/aym_image/files/free-100-robux_GM431946152.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/minecraft-classic-free_GM479516143.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/where-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/coin-master-cheats-2021_GM406889139.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/coin-master-free-attack-link_GM406889139.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/can-you-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/coin-master-free-spins-link-app-download_GM406889139.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/how-to-hack-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/robux-com-free-robux_GM431946152.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/roblox-hacks-and-cheats_GM431946152.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/robux-cheat_GM431946152.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/free-roblox-acc_GM431946152.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/coin-master-daily-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/how-to-hack-coin-master-pc_GM406889139.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/hack-coin-master-spin-apk_GM406889139.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/roblox-robux_GM431946152.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/coin-master-free-spins-coins_GM406889139.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/how-often-pubg-uc-advance_GM1330123889.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/free-robux-gift-card-codes-2021_GM431946152.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/download-hacked-games-coin-master_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_004_off000051b7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51B7 24696 bytes
SHA-256: b392d88345e3213f8ffa8380967f5ff74eebe0e38a14ed27dd61eb07c04484ea
font_01_sfnt_off00008a55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A55 18556 bytes
SHA-256: 872856dc36b7d0cde2667ea9daae6868ef6ed6eada75fea978a440faa6a0cafa

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