Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e88d6dbfe0cae86…

MALICIOUS

PDF

51.0 KB Created: 2021-06-03 11:25:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: df3b4cf4e472b26e010eda0cf7d1d85a SHA-1: 9f93434ecfcf1ae1fd174b7618a4a7688a7aeaf6 SHA-256: 0e88d6dbfe0cae86cb0a7c2ad998337fd1ef552d58e5607da4ab547627f4eed4
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a link disguised as a game hack tool, which is a common lure for users to download potentially malicious software. The ML classifier strongly indicated maliciousness, and the presence of multiple URLs pointing to similar 'hack' or 'generator' themes reinforces this. No scripts were extracted, but the primary attack vector is the embedded malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9713

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.online/app/406889139/coin-master-hack-tool-v1-9-download-free-game-hack PDF link annotation
    • https://library.stikesmi.ac.id/repository/coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/real-robux-codes_GM431946152.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/real-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/roblox-source_GM431946152.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/free-coin-coin-master_GM406889139.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/coin-master-hack-to-get-free-spins_GM406889139.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/synapse-roblox-free_GM431946152.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/minecraft-pe-texture-packs-free-download_GM479516143.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/hack-coin-master-for-iphone_GM406889139.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/coin-master-hack-dot-xyz_GM406889139.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/coin-master-hack-online-pc_GM406889139.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/coin-master-free-spins-and-chips_GM406889139.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/blox-best-robux_GM431946152.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/minecraft-free-android_GM479516143.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/how-do-you-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/coin-master-hack-tool-no-human-verification_GM406889139.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/free-robux-app_GM431946152.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/coin-master-card-hack-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005356.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5356 24264 bytes
SHA-256: bcabf3bac690e5f1af548ff474e07a44907157c018099ca6b40f3b6f76d048d9
font_01_sfnt_off00008b18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B18 4028 bytes
SHA-256: 6a4891da4f8b73c02e22ecd6fa566d6bb4f5f2d5575b30a343f3d3c5e0919267
font_02_sfnt_off000098bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x98BB 2788 bytes
SHA-256: 6fd7c7f447d66842f81aa8cf197935b17f22157d0c7e9f95622df1b5b4ddf530
font_03_sfnt_off0000a2ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA2AB 18864 bytes
SHA-256: f6546c931e30ebe5b0f44735796ae8f725f630439fc19eae70f9e7cc234a2321

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