Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0c3a0afb6cd4f42…

MALICIOUS

PDF

46.1 KB Created: 2021-05-10 13:43:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 23a5f1a54f6f83c136b4b2a50e68553f SHA-1: a212f581461735091148837ecad88e4018f373ae SHA-256: f0c3a0afb6cd4f42939a349388ddcb87dac71abb2cac587862360bb8ab338b91
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a high-confidence heuristic firing for linking to a 'free generator / game hack' lure, specifically pointing to the URL https://netcdn.xyz/app/431946152/robux-best-game-hack. This indicates a social engineering attempt to trick users into visiting a potentially malicious site. While no scripts were explicitly extracted, the PDF structure and embedded links suggest a common pattern for delivering malware or phishing content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

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/431946152/robux-best-game-hack PDF link annotation
    • http://global-brand.net/userfiles/files/free-robux-websites-that-actually-work_GM431946152.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/how-to-get-minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/freespinandcoinblogspotcom-2021-11-coinmasterfreespinandcoinlinkshtml_GM406889139.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/minecraft-hacks-for-2b2t_GM479516143.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/https-rbx-place-rewards_GM431946152.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/how-to-change-your-name-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/free-robux-no-verification-needed_GM431946152.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/how-to-get-minecraft-for-free-on-phone_GM479516143.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/how-to-get-free-spins-on-coin-master-game_GM406889139.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/wurst-mc_GM479516143.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/is-roblox-free-on-nintendo-switch_GM431946152.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/free-coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/free-coin-master-spins-no-human-verification_GM406889139.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/free-robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/haktuts-coin-master_GM406889139.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/roblox-sexually-abused_GM431946152.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/buy-robux-free_GM431946152.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/coin-master-free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/how-to-get-free-robux-without-human-verification_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000049d7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49D7 25372 bytes
SHA-256: 6d2ac5a186bf3fabf4938cc32b93ac6832a0469c197ec50d0a605fb3c58234be
font_01_sfnt_off00008505.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8505 4008 bytes
SHA-256: 515da38a799acdefd039af3a0dfb6ec4815b572058c9bd492ec5a77cd7658593
font_02_sfnt_off00009291.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9291 17952 bytes
SHA-256: 7162e53a7291fe5caf8ea92df1520b9b193a8e3c91ef44249b81f43b53263d68

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