Malicious PDF — malware analysis report

Static analysis result for SHA-256 2059ab91a9dab706…

MALICIOUS

PDF

43.9 KB Created: 2021-05-30 22:41:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 53fd2f5ab82a23e175c586e2e97a71d7 SHA-1: ceb501793a0e838afe24f16e23496fd6f48b6b4f SHA-256: 2059ab91a9dab706c0d3f4cf12cd5c8a2f9887c06fd193776ed9a8ec8a42fff0
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to 'free generator / game hack' which redirects to a malicious URL. The ML classifier also flagged this PDF as malicious. The primary IOC is the redirect URL, which likely leads to a phishing or malware distribution site. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9709

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/835599320/tiktok-free-views-game-hack PDF link annotation
    • https://zakatiq.com/wp-content/uploads/fsqm-files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://zakatiq.com/wp-content/uploads/fsqm-files/how-to-get-minecraft-for-free-on-xbox-one_GM479516143.pdfIn PDF document text
    • https://zakatiq.com/wp-content/uploads/fsqm-files/minecraft-free-ios_GM479516143.pdfIn PDF document text
    • https://zakatiq.com/wp-content/uploads/fsqm-files/minecraft-free-download-android_GM479516143.pdfIn PDF document text
    • https://zakatiq.com/wp-content/uploads/fsqm-files/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://zakatiq.com/wp-content/uploads/fsqm-files/free-spins-coin-master-unlimited_GM406889139.pdfIn PDF document text
    • https://zakatiq.com/wp-content/uploads/fsqm-files/how-to-get-minecraft-for-free-ios_GM479516143.pdfIn PDF document text
    • https://zakatiq.com/wp-content/uploads/fsqm-files/rblx-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://zakatiq.com/wp-content/uploads/fsqm-files/free-robux-generator-no-survey_GM431946152.pdfIn PDF document text
    • https://zakatiq.com/wp-content/uploads/fsqm-files/coin-master-free-coins-and-spins-app_GM406889139.pdfIn PDF document text
    • https://zakatiq.com/wp-content/uploads/fsqm-files/minecraft-hacked-client-112-2_GM479516143.pdfIn PDF document text
    • https://zakatiq.com/wp-content/uploads/fsqm-files/how-to-get-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • https://zakatiq.com/wp-content/uploads/fsqm-files/rbxfree-com-free-robux_GM431946152.pdfIn PDF document text
    • https://zakatiq.com/wp-content/uploads/fsqm-files/is-minecraft-free_GM479516143.pdfIn PDF document text
    • https://zakatiq.com/wp-content/uploads/fsqm-files/minecraft-free-download-mac_GM479516143.pdfIn PDF document text
    • https://zakatiq.com/wp-content/uploads/fsqm-files/free-tiktok-likes-trial_GM835599320.pdfIn PDF document text
    • https://zakatiq.com/wp-content/uploads/fsqm-files/free-tiktok-fans-no-human-verification-or-downloading-apps_GM835599320.pdfIn PDF document text
    • https://zakatiq.com/wp-content/uploads/fsqm-files/how-do-i-get-free-robux_GM431946152.pdfIn PDF document text
    • https://zakatiq.com/wp-content/uploads/fsqm-files/coin-master-free-spins-and-coins-blogspot_GM406889139.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_off00004687.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4687 25728 bytes
SHA-256: 9103e411947380ef159b58f0b7bfea6b065cbf911feb0b9acdeb56a93ed1b7a5
font_01_sfnt_off0000805a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x805A 2940 bytes
SHA-256: eb230542719c96b42e3fd8bb01e35f13ebd5f02629049da3a58e7fd7607bf48a
font_02_sfnt_off00008a69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A69 17752 bytes
SHA-256: c0458c8281c5f614ec80a73af60f82da894f7f0cb4b38fcd4688d4eb1216e853

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