Malicious PDF — malware analysis report

Static analysis result for SHA-256 79da3b4484e14a2d…

MALICIOUS

PDF

35.1 KB Created: 2021-07-08 17:38:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 28cd172f8618c7700f048d11ca2a9c35 SHA-1: c5d1c8020b59deac31b19341e3e72dbd3f83ac6b SHA-256: 79da3b4484e14a2d283c2bd34e6fe26d8b00049b39fa3929ec2da0a40faa71fe
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/835599320/tiktok-free-like-and-followers-apk-game-hack PDF link annotation
    • http://uilis.unsyiah.ac.id/ebook/repository/coin-master-hacks-no-surveys_GM406889139.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/hack-all-games-in-roblox_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/goo-dot-gl-hnkqwp-replace-dot-with-free-robux_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/coin-master-free-account_GM406889139.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/roblox-how-to-make-badges-for-free_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/roblox-hack-cheat_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/play-roblox-hacked_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/free-minecraft-coins_GM479516143.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/gimme-free-robux_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/coinmasterfreespinlink_GM406889139.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/google-how-do-you-get-robux_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/free-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/how-to-get-free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/tiktok-free-food-vending-machine_GM835599320.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/free-robux-generator-no-survey-or-download-2021_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/roblox-how-to-hack-ro-get-free-robux-no-scam_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
font_00_sfnt_off0000327b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x327B 22780 bytes
SHA-256: 15d568bde4b3a2288281d5f80252496b241c18de3518e1bcc1ce7e1798dae166
font_01_sfnt_off000065b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65B8 18560 bytes
SHA-256: 6d5a0d20a61fdc48e6140247fe1d8e90d6a6b369997e89daa86965e6b1b5265c

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