Malicious PDF — malware analysis report

Static analysis result for SHA-256 9959948241b4e951…

MALICIOUS

PDF

35.0 KB Created: 2021-06-21 14:59:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 73668d03125dea25cec8f598c0d413fd SHA-1: 5f4227ac95826dcab70e79c0f848da5208e8b47b SHA-256: 9959948241b4e9514070b771c289b5d46e39249270abed9cbdec310d4bc66bc9
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a prominent link to a website promising game hacks, identified by the 'PDF_GAME_HACK_REDIRECT_LURE' heuristic. The document body and extracted URLs reinforce this lure, directing users towards potentially malicious content. Although no scripts were extracted, the ML classifier strongly flagged this PDF as malicious, indicating a high likelihood of a scam or malware delivery attempt.

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/406889139/coin-master-spins-2021-game-hack PDF link annotation
    • https://www.jubileeparkacademyprospectus.co.uk/admin/ckfinder/userfiles/files/free-minecraft-skin-maker_GM479516143.pdfIn PDF document text
    • https://www.jubileeparkacademyprospectus.co.uk/admin/ckfinder/userfiles/files/blox-world-free-robux_GM431946152.pdfIn PDF document text
    • https://www.jubileeparkacademyprospectus.co.uk/admin/ckfinder/userfiles/files/coin-master-free-spin-and-trading-group_GM406889139.pdfIn PDF document text
    • https://www.jubileeparkacademyprospectus.co.uk/admin/ckfinder/userfiles/files/free-coinmaster-spins_GM406889139.pdfIn PDF document text
    • https://www.jubileeparkacademyprospectus.co.uk/admin/ckfinder/userfiles/files/free-robux-redeem-codes_GM431946152.pdfIn PDF document text
    • https://www.jubileeparkacademyprospectus.co.uk/admin/ckfinder/userfiles/files/coin-master-apk-mod_GM406889139.pdfIn PDF document text
    • https://www.jubileeparkacademyprospectus.co.uk/admin/ckfinder/userfiles/files/how-to-hack-to-go-through-walls-in-roblox_GM431946152.pdfIn PDF document text
    • https://www.jubileeparkacademyprospectus.co.uk/admin/ckfinder/userfiles/files/free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.jubileeparkacademyprospectus.co.uk/admin/ckfinder/userfiles/files/how-to-get-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • https://www.jubileeparkacademyprospectus.co.uk/admin/ckfinder/userfiles/files/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • https://www.jubileeparkacademyprospectus.co.uk/admin/ckfinder/userfiles/files/coin-master-fun-hack-online_GM406889139.pdfIn PDF document text
    • https://www.jubileeparkacademyprospectus.co.uk/admin/ckfinder/userfiles/files/how-to-download-minecraft-for-free-on-your-phone_GM479516143.pdfIn PDF document text
    • https://www.jubileeparkacademyprospectus.co.uk/admin/ckfinder/userfiles/files/oprewards-com-earn_GM431946152.pdfIn PDF document text
    • https://www.jubileeparkacademyprospectus.co.uk/admin/ckfinder/userfiles/files/minecraft-windows-10-edition-free-download_GM479516143.pdfIn PDF document text
    • https://www.jubileeparkacademyprospectus.co.uk/admin/ckfinder/userfiles/files/when-was-minecraft-free_GM479516143.pdfIn PDF document text
    • https://www.jubileeparkacademyprospectus.co.uk/admin/ckfinder/userfiles/files/free-coin-master-spins-hack_GM406889139.pdfIn PDF document text
    • https://www.jubileeparkacademyprospectus.co.uk/admin/ckfinder/userfiles/files/daily-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • https://www.jubileeparkacademyprospectus.co.uk/admin/ckfinder/userfiles/files/roblox-free-robux-website_GM431946152.pdfIn PDF document text
    • https://www.jubileeparkacademyprospectus.co.uk/admin/ckfinder/userfiles/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.jubileeparkacademyprospectus.co.uk/admin/ckfinder/userfiles/files/free-minecraft-texture-packs-java_GM479516143.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
stream_002_off0000329d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x329D 22860 bytes
SHA-256: f4b6f57b23817c3559757b875156e40f0eb317a8b68e4c2b6c129853367d6763
font_01_sfnt_off000065ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65AD 18412 bytes
SHA-256: b75e5ef993f57d3daa6e8a2ce07d141862f5d749ef2e58f79798588bbec5ce21

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