Malicious PDF — malware analysis report

Static analysis result for SHA-256 2165096b4eda5155…

MALICIOUS

PDF

34.3 KB Created: 2021-07-01 15:25:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: fc7cffdf3f1d5fad7db7b3301229f667 SHA-1: 6d7eafb67474153fcf83853b4318d81075fb58ba SHA-256: 2165096b4eda515581ce2d7a527a8cedd2cd675766b86986c2ccb4d32601d82a
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded URLs that lead to a redirector infrastructure, identified as malicious. The document body and heuristics suggest a lure for game-related cheats or currency, likely to deliver a secondary payload. The ML classifier strongly supports the malicious verdict.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 3

  • 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/free-robux-growbux.net-game-hack In PDF document text
    • https://www.planetzoe.hr/files/hack-robux-2021-free_GM431946152.pdfIn PDF document text
    • https://www.planetzoe.hr/files/roblox-sexually-abused_GM431946152.pdfIn PDF document text
    • https://planetzoe.hr/files/bit-ly-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://www.planetzoe.hr/files/free-card-collection-in-coin-master_GM406889139.pdfIn PDF document text
    • https://planetzoe.hr/files/hack-coin-master-link_GM406889139.pdfIn PDF document text
    • https://www.planetzoe.hr/files/how-do-you-get-free-roblox_GM431946152.pdfIn PDF document text
    • https://planetzoe.hr/files/coin-master-ios-gods-hack_GM406889139.pdfIn PDF document text
    • https://planetzoe.hr/files/mcpe-master-free-coins_GM406889139.pdfIn PDF document text
    • https://planetzoe.hr/files/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • https://planetzoe.hr/files/roblox-cheats-fr-robux_GM431946152.pdfIn PDF document text
    • https://planetzoe.hr/files/hack-version-of-coin-master_GM406889139.pdfIn PDF document text
    • https://www.planetzoe.hr/files/roblox-hack-mod-apk-2021_GM431946152.pdfIn PDF document text
    • https://planetzoe.hr/files/how-to-hack-a-roblox-account-2021_GM431946152.pdfIn PDF document text
    • https://planetzoe.hr/files/mc-update_GM479516143.pdfIn PDF document text
    • https://www.planetzoe.hr/files/how-to-get-minecraft-bedrock-edition-for-free_GM479516143.pdfIn PDF document text
    • https://www.planetzoe.hr/files/minecraft-hacked-client-112-2_GM479516143.pdfIn PDF document text
    • https://www.planetzoe.hr/files/free-robux-codes_GM431946152.pdfIn PDF document text
    • https://planetzoe.hr/files/boku-no-roblox-hack-script-pastebin_GM431946152.pdfIn PDF document text
    • https://www.planetzoe.hr/files/minecraft-realms-free-codes_GM479516143.pdfIn PDF document text
    • https://www.planetzoe.hr/files/minecraft-realms-free-trial_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
font_00_sfnt_off00003016.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3016 21976 bytes
SHA-256: ecb58e287919d2b94189f927c2463a20ee309200aa83f22a757e6bc2243ffc84
font_01_sfnt_off000060d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60D0 19048 bytes
SHA-256: 33ca7a17872ba91079c8a90017e952fb168e6fa49d9dc61dcdd22bba4519e3db

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