Malicious PDF — malware analysis report

Static analysis result for SHA-256 af1e02dc2e019bee…

MALICIOUS

PDF

33.6 KB Created: 2021-07-05 16:13:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 2218e45d56377b5dd5a8e8fb0779b28f SHA-1: d8599360316b8a6983fa3c92dd36c365d76cba4f SHA-256: af1e02dc2e019bee95d20051f09ce3508d9cc7132ef66966e6b1663b9cd59db6
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

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/coin-master-cards-free-game-hack PDF link annotation
    • https://opac.umrah.ac.id/repository/how-to-get-free-robux-from-a-hat_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/minecraft-dungeons-free_GM479516143.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/minecraft-windows-10-edition-free-download_GM479516143.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/the-cheat-roblox_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-free-spins-link-haktuts_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/airport-in-roblox-free-download_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/hack-cuentas-gratis-en-roblox-pastebin_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-friend-hack_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-its-free-earrape_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-get-a-free-monster-truck-in-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-free-spins-and-coins-link-haktuts_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-do-yoy-get-robux-for-free_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/hacks-for-roblox-island-royale-for-money_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-sets-suicidegirls-roblox_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-robux-stream_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-hacks-2021_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/robux-generator_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-get-free-robux-javascript-2021_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-hack-pc-cheat-engine_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-get-free-robux-no-download-or-survey-2021_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_off00002e66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E66 22496 bytes
SHA-256: 3578a4d1e56416de5be538843730ee978c39172da1f4881589235dc35345a1ff
font_01_sfnt_off000060b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60B9 18172 bytes
SHA-256: 51a6fa1d0322029b9e2ca075150f5a08b3c54d54cadd2367ada3da490e26397a

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