Malicious PDF — malware analysis report

Static analysis result for SHA-256 680cc97147e65ef3…

MALICIOUS

PDF

44.3 KB Created: 2021-05-10 15:40:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: d195ab1d2e930c6e29449462b0dbd74e SHA-1: a87b135d8343cdc10d280368124f28d9909f6e48 SHA-256: 680cc97147e65ef37adf5906e9e9e93de6efd1009156dcaed2a6717d72e2b963
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-confidence heuristic indicating it links to a game hack redirector, specifically for 'Coin Master'. The embedded URL 'https://netcdn.xyz/app/406889139/coin-master-free-spins-only-game-hack' is the primary indicator of this lure. While no scripts were explicitly extracted, the nature of PDF exploits often involves embedded JavaScript to facilitate redirection or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

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/coin-master-free-spins-only-game-hack PDF link annotation
    • https://elearning.man2gresik.info/__statics/gudangsoal/files/free-coins-coin-master-link-today_GM406889139.pdfIn PDF document text
    • https://elearning.man2gresik.info/__statics/gudangsoal/files/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • https://elearning.man2gresik.info/__statics/gudangsoal/files/free-spins-for-coin-master-ios_GM406889139.pdfIn PDF document text
    • https://elearning.man2gresik.info/__statics/gudangsoal/files/windows-10-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://elearning.man2gresik.info/__statics/gudangsoal/files/get-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://elearning.man2gresik.info/__statics/gudangsoal/files/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • https://elearning.man2gresik.info/__statics/gudangsoal/files/free-face-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.man2gresik.info/__statics/gudangsoal/files/coin-master-free-spins--coins-2021_GM406889139.pdfIn PDF document text
    • https://elearning.man2gresik.info/__statics/gudangsoal/files/free-robux-no-verification-needed_GM431946152.pdfIn PDF document text
    • https://elearning.man2gresik.info/__statics/gudangsoal/files/free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.man2gresik.info/__statics/gudangsoal/files/get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://elearning.man2gresik.info/__statics/gudangsoal/files/how-do-you-hack-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.man2gresik.info/__statics/gudangsoal/files/free-coin-master-spins-no-human-verification_GM406889139.pdfIn PDF document text
    • https://elearning.man2gresik.info/__statics/gudangsoal/files/coin-master-free-link-2021_GM406889139.pdfIn PDF document text
    • https://elearning.man2gresik.info/__statics/gudangsoal/files/free-minecraft-shaders_GM479516143.pdfIn PDF document text
    • https://elearning.man2gresik.info/__statics/gudangsoal/files/robux-free-com_GM431946152.pdfIn PDF document text
    • https://elearning.man2gresik.info/__statics/gudangsoal/files/coin-master-daily-free-spins-link-app_GM406889139.pdfIn PDF document text
    • https://elearning.man2gresik.info/__statics/gudangsoal/files/coinmaster-links_GM406889139.pdfIn PDF document text
    • https://elearning.man2gresik.info/__statics/gudangsoal/files/free-robux-rewards_GM431946152.pdfIn PDF document text
    • https://elearning.man2gresik.info/__statics/gudangsoal/files/roblox-source_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a82.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A82 24468 bytes
SHA-256: 662cbdde68871c7b3fdf67f8d27b6de7778db9e65eeccda9d812324b4f41f820
font_01_sfnt_off000080fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80FC 2868 bytes
SHA-256: d2d857e2ddc1082c7667b23f2135a5c0ba26a2ff8b42c86c89c8e0b09aece855
font_02_sfnt_off00008ae7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AE7 18140 bytes
SHA-256: e8323280cfa25f0840c1e0ad6f99419943ef2c7379aa1851e8b4a739432d5c3e

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