Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f969b3d6c703576…

MALICIOUS

PDF

34.2 KB Created: 2021-06-26 09:03:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 2b5dd237e3a369c713c58ce785e9bc24 SHA-1: 113c5e550af5dfcce4f64dcf2f533f0211fb8f4d SHA-256: 3f969b3d6c7035763db81b2e4f63a2be373ef5393fdba8be71144b3339132d66
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 0.9980

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 http://netcdn.co/app/431946152/roblox-catalog-free-stuff-hack-game-hack PDF link annotation
    • http://aeridefense.com/image/data/files/roblox-fashion-famous-hack_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/minecraft-free-download-windows_GM479516143.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/roblox-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/how-to-get-free-ranks-in-a-roblox-group_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/coin-master-free-spins-link-quora_GM406889139.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/hack-nuevo-para-roblox-2021-editar-servidor_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/how-to-get-free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/free-black-clover-roblox_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/how-to-get-a-free-minecraft-account_GM479516143.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/how-you-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/hack-site-robloxcom_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/roblox-bux-free_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/roblox-rewards_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/free-robux-no-verification-no-download-2021_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/how-to-hack-peoples-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/mcmaster-club-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/how-to-hack-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/coin-drop-master-free_GM406889139.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/roblox-free-dominus-hat-not-model_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/coin-master-free-spin-game_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
font_00_sfnt_off00002eb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EB0 22412 bytes
SHA-256: 5661e22231dd2ea577126980bc7009b729acd6648e3db519864a331a6b45e242
font_01_sfnt_off000060aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60AA 19064 bytes
SHA-256: 8532a694701f5653ab4172c070d0c33cbc09755f49e417c4f8bcbea5b75d0790

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