Malicious PDF — malware analysis report

Static analysis result for SHA-256 e62ebc732b2971f1…

MALICIOUS

PDF

34.0 KB Created: 2021-06-28 15:00:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 4c76fd2f2b19f0bdafd0dcad053d5a9a SHA-1: abf1b5d56e1a9d0592a795e2b3250216f54788d8 SHA-256: e62ebc732b2971f123995549973561ca1f61f48124356cfa6c098c95444a0cfe
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to websites that offer 'free generators' or 'hacks' for popular games, such as Robux for Roblox and spins for Coin Master. One prominent URL, http://netcdn.co/app/431946152/how-to-get-free-robux-without-human-verification-real-game-hack, is flagged as a malicious redirector. The presence of these lures and the malicious redirector strongly suggests a phishing or scam attempt designed to trick users into visiting potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/how-to-get-free-robux-without-human-verification-real-game-hack In PDF document text
    • https://www.zagorjeadventureteam.hr/files/coin-master-free-download-app_GM406889139.pdfIn PDF document text
    • http://zagorjeadventureteam.hr/files/roblox-free-rubox_GM431946152.pdfIn PDF document text
    • http://zagorjeadventureteam.hr/files/is-roblox-studio-free_GM431946152.pdfIn PDF document text
    • http://zagorjeadventureteam.hr/files/i-cant-get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/rbl-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/coin-master-hack-pc-free_GM406889139.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/free-roblox-hack-us_GM431946152.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/coin-master-download_GM406889139.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/free-roblox-decal_GM431946152.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/how-to-get-free-minecoins-in-minecraft_GM479516143.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/coin-master-hackcom-xyz_GM406889139.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/how-to-install-minecraft-for-free-on-ios_GM479516143.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/roblox-hack-client_GM431946152.pdfIn PDF document text
    • http://zagorjeadventureteam.hr/files/nuevo-hack-de-robux-2021-funcionando_GM431946152.pdfIn PDF document text
    • http://zagorjeadventureteam.hr/files/hiw-ti-hack-a-roblox-account_GM431946152.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/roblox-redeem_GM431946152.pdfIn PDF document text
    • http://zagorjeadventureteam.hr/files/free-roblox-items-codes_GM431946152.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/how-can-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://zagorjeadventureteam.hr/files/free-minecraft-server-hosting-24-7_GM479516143.pdfIn PDF document text
    • http://zagorjeadventureteam.hr/files/coin-master-hack-with-lucky-patcher_GM406889139.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_off00002f02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F02 21408 bytes
SHA-256: 340a9a7a0336f21c80a59ebbb2985a4678d57b13416afce90945f24b0e132943
font_01_sfnt_off00005d73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D73 19936 bytes
SHA-256: 2669d2ff37e26eafd8890498a27ed0434de01bae614fc9e7ab560cd7603e6086

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