Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d39e0321c02158a…

MALICIOUS

PDF

34.1 KB Created: 2021-06-26 05:31:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 87e268b48892c19173b11effcc47bb91 SHA-1: 0be7c6077c2f35f716263d07688bc057bec389db SHA-256: 4d39e0321c02158a62a713fc1b37e10a941c52979bc23d28ddcf2b20b96065cf
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/how-to-hack-in-arsenal-game-hack PDF link annotation
    • https://limebug.com/media/storage/editor/files/how-to-get-free-robux-no-scam_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/pokemon-go-free-6th-gen_GM1094591345.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/coin-master-free-spins-2021-hack_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/roblox-login-hack_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/coin-master-hack-spins-and-coins-unlimited-free_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/apk-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/free-robux-survey_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/coin-master-firebird-card-free_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/cheat-roblox-counter-blox_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/claim-free-robux_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/roblox-download-pc-free_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/tlcharger-hack-roblox_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/coin-master-hack-dot-xyz_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/robuxglobalcom_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/free-coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/coin-master-20-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/roblox-how-to-get-an-item-for-free_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/free-robux-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/free-roblox-accounts-2021-with-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002e8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E8D 22944 bytes
SHA-256: 8435e9053f8e4a4fae739e0615b7291c7a4eebec635bb3cb669440c22f393e22
font_01_sfnt_off000061ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61EF 18452 bytes
SHA-256: e830d4d2850352ff681c802b50bfdb69e36cdf0dd9a2fca6f972fc848603048f

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