Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7308a1212c0e24b…

MALICIOUS

PDF

47.3 KB Created: 2021-06-04 00:03:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 08cadb01e4dc9c4fedc1eec06890537b SHA-1: f6df34f6779680b9e0b336cc015940fea8a94f18 SHA-256: e7308a1212c0e24bc274db7f1c2ad06fb2e4c4ba0c8a197653000d872b69a576
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that redirect to websites advertising game hacks and free currency generators, a common lure for phishing or malware distribution. The ML classifier also flagged this PDF as malicious. No scripts were extracted from this sample, but the presence of numerous suspicious URLs and the lure content strongly suggest a malicious intent to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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/best-site-for-free-coin-master-free-spin-link-game-hack PDF link annotation
    • http://lib.stimykpn.ac.id/repository/how-to-coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/hack-coin-master-dzooka_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/coin-master-free-spin-app-2021_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coin-master-hacks-no-surveys_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/free-roblox-followers-generator_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coin-master-free-spins-link-cheat_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/complete-offers-for-robux_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/how-to-get-free-robux-fast-and-easy_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/roblox-hacked-accounts-list_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/free-roblox-boy-hair_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/does-coin-master-hack-work_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-spins-coin-master-unlimited_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/get-robux-today_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coin-master-free-spins-no-generator_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/sb-game-hacker-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-minecraft-alt-generator_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/freer-tiktok_GM835599320.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-robux-website_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/114-4-hacks_GM479516143.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_004_off00004f57.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F57 25704 bytes
SHA-256: 0b8c49bf8f9a7d36bf21fe2f36f781d3e2edc9635dc4da365d52f56c048c4463
font_01_sfnt_off00008add.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8ADD 3264 bytes
SHA-256: 82ed5b9911236caed878c50a88de9a53db3568cfbef6d89f13d65c14cb1b35b6
font_02_sfnt_off00009627.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9627 18272 bytes
SHA-256: ca1d5c85fdffad6772495688e388105cc3e45c07940918e965146369a91d2d3c

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