Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2eac7842caaa780…

MALICIOUS

PDF

43.1 KB Created: 2021-06-03 09:58:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 639be4df5da5d08dd055d34b209f7458 SHA-1: 4ae7e506034dde11fb0a9d41a6be9abced820ad6 SHA-256: a2eac7842caaa780cb66a86fedb6d4213f0eeac8d7c7e3eef7e1046df180d858
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links and a call-to-action lure, directing users to a URL associated with game hacks. This URL, 'https://netcdn.online/app/406889139/hack-coin-master-iphone-game-hack', is highly suspicious and likely leads to a malicious site for credential harvesting or malware distribution. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9874

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/hack-coin-master-iphone-game-hack PDF link annotation
    • http://lib.teknik.unimal.ac.id//repository/mcpe-master-hack-coin-apk_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/coin-master-promo-code-2021_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/roblox-adopt-me-hacks-2021_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/how-to-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/coin-master-free-spins-2021-link_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/real-robux-generator_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/master-coin-hack-mod_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/coin-master-hack-download-ios_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/free-roblox-clothes-and-hair_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/www-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/coin-master-hack-tool-v1-9-download-free-pc_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/toolbox-mod_GM479516143.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/lazyblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/daily-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/free-robux-for-kids_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/how-to-hack-people-in-roblox_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_off00004fbd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4FBD 24020 bytes
SHA-256: 73b6d9b5954418229914c0492d3add32909893468b38ace83734e598a4d51e3f
font_01_sfnt_off0000869b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x869B 18060 bytes
SHA-256: 98ffcaa8ac03649816b9da258085ae9fc6eae62b2f5ad3ff33c1336735992c31

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