Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2d4acadbc314864…

MALICIOUS

PDF

44.3 KB Created: 2021-06-04 04:13:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 57a3d688b06e984f466897b75cdc2e4e SHA-1: dbd4bf90bbacf0b3ac738f9768ebcde5b513c9de SHA-256: c2d4acadbc314864bfe647a273ed0b45b5684ca57ce970f6defdeb18da08099b
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/431946152/www-roblox-com-robux-free-game-hack PDF link annotation
    • http://library.itekes-bali.ac.id/repository/roblox-free-no-download_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-rewards-2021_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/hack-coin-master-dzooka_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-hack-app-2021_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/tiktok-free-upload_GM835599320.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-game-hack_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-15-free-spin-link-of-last-5-days_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-to-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-heaven-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-free-coins-and-spins-link_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-minecraft-severs_GM479516143.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/game-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-robux-gift-card_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-minecraft-wallpaper_GM479516143.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-robux-offers_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/game-hunters-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_off00004eaa.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4EAA 25872 bytes
SHA-256: 52a6763ec2409b17ab02fc06dc652fe2a4493c89a0582d39ea5bd1f81ef68c81
font_01_sfnt_off0000895d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x895D 18708 bytes
SHA-256: c91f27fd30ec200e2a0dbd5cc88ad35776bc2371b1b59549651737de5f7a4295

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