Malicious PDF — malware analysis report

Static analysis result for SHA-256 81d7815e66a186c7…

MALICIOUS

PDF

43.1 KB Created: 2021-06-03 22:55:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: c93f72f15c7e3e8f690e4573dbd8c20a SHA-1: 3dd5c7ce74dbafe512aba788253ae331f4f2a815 SHA-256: 81d7815e66a186c74f42171576a2923ba7ccfdfeb0b64f17feecc029563fbeaf
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

The PDF document contains a high-severity heuristic indicating it links to a game hack lure. The document body and extracted URLs confirm this, pointing to a website promising free spins for Coin Master. This suggests the file is designed to trick users into visiting a potentially malicious site by exploiting their interest in game cheats.

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/coin-master-free-spins-cheat-game-hack PDF link annotation
    • https://digilib.stieama.ac.id/repository/how-do-i-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/easy-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/haktuts-coin-master-today_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/daily-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/lots-of-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/pubg-uc-buy_GM1330123889.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/roblox-pink-free-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-free-spins-hack-without-human-verification_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-play-online-free_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-free-spins-today-new_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/robux-free-com_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-links-to-coin-master_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/microsoft-rewards-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-free-spins-no-verification_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-minecraft-mods_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-free-spins-link-today-haktuts_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-block-someone-on-coin-master_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-spin-coin-master-link-2021_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_004_off00004e85.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E85 24484 bytes
SHA-256: ac7e4ce3d794ec0749d980dd562ba864895e7b7744a2463bfef358e7eb5a83c2
font_01_sfnt_off0000867a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x867A 18052 bytes
SHA-256: 9bd717b0e04310867829ca511b483eebbd60050a5b8b31305794fbcb17f8519e

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