Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9b7e879b16f394a…

MALICIOUS

PDF

45.5 KB Created: 2021-06-03 10:59:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 06c37d4efb6d4bceecb3d508ec3a8ad7 SHA-1: 14b5586f196c2051c347b6acb909af203591f447 SHA-256: a9b7e879b16f394a724c346b8e6fa3e8f278ee0405cf7e884e0a522644df9f0b
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to external websites that promote "game hacks" and "free generators", indicating a lure for potentially unwanted applications or scams. The ML classifier strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lures suggest an attempt to redirect users to malicious or deceptive content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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-apk-hack-download-game-hack PDF link annotation
    • http://katalog.ireyogya.org/repository/coin-master-free-spins-heaven_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/how-to-get-free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/how-to-get-free-robux-fast_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/how-to-hack-oney-on-ud-roblox_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/how-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/roblox-hacked-version-download-apk_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/microsoft-bing-free-robux_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-game-hack-app-download_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-minecraft-premium-account_GM479516143.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/was-minecraft-ever-free_GM479516143.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/easiest-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/pokemon-go-free-trade-evolution_GM1094591345.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-minecraft-hosting-24-7_GM479516143.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-spin-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/worst-roblox-avatars_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-links-for-today_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-in-app-purchase-hack_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/minecraft-education-edition-free-download_GM479516143.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/roblox-free-robux-generator_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_004_off00005159.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5159 29712 bytes
SHA-256: 9913b9e3eb18a7480277ec1ff4491b248dda68e8f8d3d351a356f231a214a0e6
font_01_sfnt_off00008e9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E9B 18472 bytes
SHA-256: 0e3831818f38ae56d02806b9c0b62f33b1ecd4ca65c3265caa2049c7f667b959

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