Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b724dfb0a57871d…

MALICIOUS

PDF

42.2 KB Created: 2021-06-03 18:50:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 069ada7b9727048d6a35ee640c97ba79 SHA-1: 62c82cbc530c82e9719e3271e82a582773d38589 SHA-256: 8b724dfb0a57871d8cded05d3edf5e5d5b1e9887d311d605450d29059df4173e
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for a "game hack" which redirects to a malicious URL. The ML classifier strongly indicated maliciousness, and the embedded URLs suggest a phishing or scam attempt. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a malicious document designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9874

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/link-for-free-spins-on-coin-master-game-hack PDF link annotation
    • http://jarviskeller.co.uk/media/storage/editor/files/_GM479516143.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/best-free-spin-app-for-coin-master_GM406889139.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/how-to-change-username-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/minecraft-clipart-free_GM479516143.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/free-robux-gift-card-codes-2021_GM431946152.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/dailyrobux_GM431946152.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/if-roblox-made-everything-free_GM431946152.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/free-minecraft-hosting_GM479516143.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/coin-master-free-coins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/scaffold-minecraft-hack_GM479516143.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/free-minecraft-svg-cutting-files_GM479516143.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/coin-master-free-coins-and-spins-daily-summary_GM406889139.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/how-to-get-free-robux-without-download-apps-or-survey_GM431946152.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/free-roblox-clothes-and-hair_GM431946152.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/haktuts-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/free-spins-and-coins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/coin-master-hack-without-verification-2021_GM406889139.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/robux-hacks-2021_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
stream_004_off00004c91.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C91 23908 bytes
SHA-256: b3ec3e244a85064a9292c39cbd02d523068b9adec20928d8da5fd3c283d50f56
font_01_sfnt_off00008316.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8316 18056 bytes
SHA-256: 722d781e478cd0d1a4785e673d05427d87221dd2f44d1d4595ffa323240eece4

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