Malicious PDF — malware analysis report

Static analysis result for SHA-256 63e3b407d813b53e…

MALICIOUS

PDF

42.0 KB Created: 2021-05-19 01:01:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: d4f3b37b802a58224894afeffa8600f8 SHA-1: 579a1af702a460b7caec672715108013c490c130 SHA-256: 63e3b407d813b53ebc41f7ad760beef92c25e08f75a9e15a130a944916223fcc
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to websites offering game hacks and free in-game currency, such as 'Coin Master Free Spin And Coin Link'. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' confirms this intent. The ML classifier also flagged the document as malicious. The primary IOC is the main redirect URL, which likely serves as a gateway to malicious content or downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/406889139/coin-master-free-spin-and-coin-link-haktuts-hacking-news-game-hack PDF link annotation
    • https://lib.stie-yai.ac.id/repository/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/roblox-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/try-minecraft-free_GM479516143.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/how-to-buy-robux-for-free_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/how-to-get-free-robux-com_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/is-pokemon-go-free_GM1094591345.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/earn-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/pubg-uc-cheap-price_GM1330123889.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/www-roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/games-on-roblox-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/minecraft-xbox-one-free_GM479516143.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/coin-master-hacker-club_GM406889139.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_003_off000047db.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47DB 24332 bytes
SHA-256: b1c66441f3391600712265d96e1eda950d03dbeeaff0c7ff2c3f802f53a4d9eb
font_01_sfnt_off00008000.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8000 18824 bytes
SHA-256: ef8f09fc3c17cc4f26b4837a2aef37de344b1ca430b1a31f5cb27c991d5625de

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