Malicious PDF — malware analysis report

Static analysis result for SHA-256 eee9da85581efb72…

MALICIOUS

PDF

43.2 KB Created: 2021-05-16 02:39:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 48abb52d3c054363899c25909e27b384 SHA-1: 8b91c7d8798098216b5ce5eb03fd8beddc2b1642 SHA-256: eee9da85581efb72c1c395366ed773a9f7dd58a5e662cc17526dd65fad53d08f
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a prominent link disguised as a game hack generator, which is a common lure for malicious downloads or phishing. The ML classifier strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect the user to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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 https://netcdn.xyz/app/406889139/how-to-coin-master-spin-hack-game-hack PDF link annotation
    • https://www.payaljewelleryfiji.com/uploaded_files/userfiles/files/coin-master-apk-hack_GM406889139.pdfIn PDF document text
    • https://www.payaljewelleryfiji.com/uploaded_files/userfiles/files/can-lucky-patcher-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://www.payaljewelleryfiji.com/uploaded_files/userfiles/files/how-to-make-robux_GM431946152.pdfIn PDF document text
    • https://www.payaljewelleryfiji.com/uploaded_files/userfiles/files/free-robux-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
    • https://www.payaljewelleryfiji.com/uploaded_files/userfiles/files/coin-master-free-spins-and-coins-app-download_GM406889139.pdfIn PDF document text
    • https://www.payaljewelleryfiji.com/uploaded_files/userfiles/files/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • https://www.payaljewelleryfiji.com/uploaded_files/userfiles/files/how-to-get-free-hair-in-roblox_GM431946152.pdfIn PDF document text
    • https://www.payaljewelleryfiji.com/uploaded_files/userfiles/files/games-on-roblox-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://www.payaljewelleryfiji.com/uploaded_files/userfiles/files/free-shirt-roblox_GM431946152.pdfIn PDF document text
    • https://www.payaljewelleryfiji.com/uploaded_files/userfiles/files/op-rewards-robux_GM431946152.pdfIn PDF document text
    • https://www.payaljewelleryfiji.com/uploaded_files/userfiles/files/coin-master-free-blogspot_GM406889139.pdfIn PDF document text
    • https://www.payaljewelleryfiji.com/uploaded_files/userfiles/files/give-me-free-robux_GM431946152.pdfIn PDF document text
    • https://www.payaljewelleryfiji.com/uploaded_files/userfiles/files/how-to-get-free-followers-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.payaljewelleryfiji.com/uploaded_files/userfiles/files/coin-master-free-spins-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • https://www.payaljewelleryfiji.com/uploaded_files/userfiles/files/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://www.payaljewelleryfiji.com/uploaded_files/userfiles/files/oprewards-free-robux_GM431946152.pdfIn PDF document text
    • https://www.payaljewelleryfiji.com/uploaded_files/userfiles/files/roblox-com-r_GM431946152.pdfIn PDF document text
    • https://www.payaljewelleryfiji.com/uploaded_files/userfiles/files/coin-master-ios-hack_GM406889139.pdfIn PDF document text
    • https://www.payaljewelleryfiji.com/uploaded_files/userfiles/files/free-robux-no-downloading-apps_GM431946152.pdfIn PDF document text
    • https://www.payaljewelleryfiji.com/uploaded_files/userfiles/files/free-robux-generator-2021-no-human-verification-or-survey_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
stream_003_off00004d16.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D16 25552 bytes
SHA-256: e80a0e64fd81b248cf93fe07602e11126860755321d44b3c816c00ae7bd3ec7d
font_01_sfnt_off000086ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86FF 18056 bytes
SHA-256: 1f393610466877c335b0a746c42865a4ba6131ecef9c5b985171e4d7c94c57d8

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