Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9e945b440a659ee…

MALICIOUS

PDF

35.0 KB Created: 2021-06-30 03:01:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 37cfe56c8db52eaf0b6ac9a21abd7bc5 SHA-1: b7aabf6ef64742e992e8c7b38c52eb49c417b13f SHA-256: f9e945b440a659eeb1ae01bb0a6de8d03fc2e87f8a6ee9eb9827ac2c86bd9e6b
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.co/app/431946152/roblox-bc-free-download-game-hack PDF link annotation
    • http://perpustakaan.poltekom.ac.id/repository/coin-master-hack-mod-apk_GM406889139.pdfIn PDF document text
    • http://perpustakaan.poltekom.ac.id/repository/roblox-april-fools-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.poltekom.ac.id/repository/free-roblox-noob-accounts_GM431946152.pdfIn PDF document text
    • http://perpustakaan.poltekom.ac.id/repository/free-tiktok-likes-no-human-verification-or-downloading-apps_GM835599320.pdfIn PDF document text
    • http://perpustakaan.poltekom.ac.id/repository/blox-supply-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.poltekom.ac.id/repository/mario-64-roblox-rom-hack-code_GM431946152.pdfIn PDF document text
    • http://perpustakaan.poltekom.ac.id/repository/freerobuxhack-us_GM431946152.pdfIn PDF document text
    • http://perpustakaan.poltekom.ac.id/repository/free-spins-coin-master-2021-glitch_GM406889139.pdfIn PDF document text
    • http://perpustakaan.poltekom.ac.id/repository/free-robux-working_GM431946152.pdfIn PDF document text
    • http://perpustakaan.poltekom.ac.id/repository/free-robux-no-apps_GM431946152.pdfIn PDF document text
    • http://perpustakaan.poltekom.ac.id/repository/coin-master-200-spin-link_GM406889139.pdfIn PDF document text
    • http://perpustakaan.poltekom.ac.id/repository/free-links-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.poltekom.ac.id/repository/free-tiktok-followers-zonder-verification_GM835599320.pdfIn PDF document text
    • http://perpustakaan.poltekom.ac.id/repository/hacks-para-roblox-strucid_GM431946152.pdfIn PDF document text
    • http://perpustakaan.poltekom.ac.id/repository/coin-master-free-spins-link-iphone_GM406889139.pdfIn PDF document text
    • http://perpustakaan.poltekom.ac.id/repository/www-robux-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.poltekom.ac.id/repository/blox-world-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.poltekom.ac.id/repository/how-to-get-free-robux-on-roblox-computer_GM431946152.pdfIn PDF document text
    • http://perpustakaan.poltekom.ac.id/repository/free-robux-hack-generator-club_GM431946152.pdfIn PDF document text
    • http://perpustakaan.poltekom.ac.id/repository/is-minecraft-education-edition-free_GM479516143.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_002_off00003109.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3109 22396 bytes
SHA-256: 3bb965aa9c78be2f2647839d3b5ff610021bb497d83e25e46e633c9566eaf699
font_01_sfnt_off00006356.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6356 19156 bytes
SHA-256: 0e7c75efac3c7dae5cbbe7aaef400a04d3e06326c873f6291a49497fbfea0659

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