Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e00a146cc1571e4…

MALICIOUS

PDF

32.7 KB Created: 2021-07-03 20:24:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 24867d721249e1fa5fe18c139751924a SHA-1: 183964f4d6b87f01805b546f1b738b04ebf4c588 SHA-256: 9e00a146cc1571e4e5c3163ddbd3d4467ffd1c9a3900ae6e5d56066dcfd6c6d7
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/bloxpage-free-robux-game-hack PDF link annotation
    • http://opac.akafarma-aceh.ac.id/repository/red-boy-hack-roblox-download_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/free-coin-master-glitches_GM406889139.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/fly-hack-download-for-jailbreak-roblox_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/coin-master-free-coins-and-spins-daily_GM406889139.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/script-hack-for-roblox_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/pubg-uc-18_GM1330123889.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/roblox-fly-hack-2021_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/robux-hack-windows_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/trolling-gui-hacks-roblox_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/cool-hacker-names-for-roblox_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/pokemon-go-free-and-apple-watch_GM1094591345.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/apps-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/roblox-free-clothes-generator_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/how-to-hack-roblox-on-android-with-lucky-patcher_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/free-robux-glitch-2021_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/free-minecraft-coloring-pages_GM479516143.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/add-robux_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/minecraft-pe-apk-free-download_GM479516143.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/how-to-hack-roblox-no-virus_GM431946152.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_off00002c65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C65 21284 bytes
SHA-256: 2cdfc4149727365491d94e0d51b231c61ea0526d10fb4883bc69979a9c339fe3
font_01_sfnt_off00005afa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AFA 18968 bytes
SHA-256: 1b5123001528eb502e32e1473b5fef90b38f1688b53074051a1ff9b6b67f8f5e

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