Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf024b3257c379a8…

MALICIOUS

PDF

34.2 KB Created: 2021-07-05 08:42:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: c60d88cec28579ef6781d978876ab387 SHA-1: 2ca810538fa4e5e2a54a482fe9975dd564970ba1 SHA-256: cf024b3257c379a8c9d3540ddbd8b6b8b541a9e44843a7f50fef777f300ec250
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/431946152/free-girl-roblox-accounts-game-hack PDF link annotation
    • http://library.unissula.ac.id/fe/repository/roblox-how-to-get-free-robu_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/free-roebucks-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/g00d-hack-roblox_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/free-minecraft-coloring-pages_GM479516143.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/games-like-minecraft-but-free_GM479516143.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/how-do-you-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/hack-para-tener-robux-rapido_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/youtube-roblox-robux-hacked_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/how-to-make-a-minecraft-client_GM479516143.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/coin-master-spin-blogspot_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/wurst-client-18-9_GM479516143.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/best-roblox-hack-ever_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/how-to-get-free-pet-food-in-coin-master_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/coin-master-homepage_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/old-roblox-accounts-for-free_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/hacks-to-insert-in-roblox-console_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/coin-master-hack-spin-generator_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/games-that-can-be-hacked_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/roblox-com-hack_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_off00003067.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3067 22020 bytes
SHA-256: 19fb2eb158bc14604c5d5024b5d82b723efc27ba5ce1a9ff78860636ad8aaae9
font_01_sfnt_off00006123.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6123 18828 bytes
SHA-256: 8bc1a2f9b67642c73bcdf1f8ad0c572ab9770c6674a2db09c58ed0c55126cdf0

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