Malicious PDF — malware analysis report

Static analysis result for SHA-256 2443a63f31cf9988…

MALICIOUS

PDF

34.9 KB Created: 2021-06-26 03:52:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 60459e8042d4ca7ca1655fe6def1cb4f SHA-1: 1721a4afc9c9208f8d21627a099d308967f0513c SHA-256: 2443a63f31cf9988e5c288818008630a2e9fedf3c3478d2c97ca5ac017096d50
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/free-robux-websites-legit-game-hack PDF link annotation
    • http://library.fk.upnvj.ac.id/repository/how-to-get-free-robux-easy-steps_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/village-4-coin-master_GM406889139.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/game-hunters-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-roblox-shirt-download_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/roblox-hacking-computer-games_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/mathep_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/plug-toolbox-for-minecraft-free-ios_GM479516143.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/robux-de-com-hack_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/minecraft-bedrock-free_GM479516143.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/roblox-someone-thinks-im-hacking_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-coin-master-gold-cards_GM406889139.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/how-to-to-hack-joining-sumones-server-roblox_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/how-to-get-free-robux-i-m-not-even-kidding_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/jump-cheat-wearedevs-roblox_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-roblox-gifts_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/how-to-make-free-shirts-on-roblox-without-bc-2021_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/can-i-get-free-money-on-roblox-adopt-me-2021_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/roblox-hair-for-free_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/minecraft-bedrock-hacks_GM479516143.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_off0000324a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x324A 22252 bytes
SHA-256: d6cafa9102815cf2bd9b058f36e32306032d7c3ff05683c0d2a905966a103598
font_01_sfnt_off0000631e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x631E 19136 bytes
SHA-256: 4004080a650f28ac7b41cae086857a9746dc056693171548c1cb36caae4130a8

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