Malicious PDF — malware analysis report

Static analysis result for SHA-256 99740654546f9081…

MALICIOUS

PDF

35.0 KB Created: 2021-07-07 23:53:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 286d82091504cc1576d2aa187bb5e2d5 SHA-1: b9ba9724cf1431f3b43e1a36a53482a83db9d7ee SHA-256: 99740654546f9081161548b7dabb7d1c133fb6d7bd68fe5518091bf154435a87
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.tw/app/406889139/60-free-spins-coin-master-game-hack PDF link annotation
    • https://library.elkatarie.ac.id/repository/test-all-roblox-gear-hats-and-shirts-free_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/roblox-person_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/get-robux-for-free-for-robloxcom-free4mobile24com_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/coin-master-free-spin-whatsapp-group_GM406889139.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/free-robux-promo-codes-2021-october_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/get-free-robux-400_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/coin-master-hack-tool-v1-9_GM406889139.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/how-to-get-1-billion-free-robux_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/roblox-mining-simolator-hack-script_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/how-to-make-your-own-game-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/free-robux-facebook_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/free-robux-reeally-works_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/today-coin-master-free-coins-link_GM406889139.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/coin-master-free-spins-generator-no-verification_GM406889139.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/roblox-hack-me_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/400-robux-free-2021_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/giftrobux-com-generator_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/roblox-phantom-forces-credit-hack-rc7_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/building-simulator-hack-roblox_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/redline-cheat-roblox-download_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

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
font_00_sfnt_off00003023.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3023 23556 bytes
SHA-256: 6f358b249f748fc3a10a40905ddfc22093e854cda7428e296e62286089929e95
font_01_sfnt_off00006589.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6589 18516 bytes
SHA-256: 9c110acbe1bdea99191041174f21e13522cf76b2385bd88ae7104caf738e615a

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