Malicious PDF — malware analysis report

Static analysis result for SHA-256 313a987907d71ddf…

MALICIOUS

PDF

43.4 KB Created: 2021-06-03 10:57:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 4efd497f9bda2bfe26c868cc34c6d315 SHA-1: 7c5679eb24c46c3ba27bc4e2e32cfc08c7f6958e SHA-256: 313a987907d71ddf78177d578939d19a7deced4d711026b4bb8c5919563492d7
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains multiple links that promise game hacks and generators, a common lure for users seeking cheats. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' and the presence of numerous related URLs strongly indicate a malicious intent to redirect users to potentially harmful sites. No scripts were extracted, but the document's structure and embedded links are sufficient to infer a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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/431946152/roblox-apk-hack-game-hack PDF link annotation
    • https://ifef.es/ckfinder/userfiles/files/coin-master-hack-mod-apk_GM406889139.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/minecraft-xbox-360-free-download-code_GM479516143.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/online-hacking-tricks-coin-master_GM406889139.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/coin-master-hack-using-cheat-engine_GM406889139.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/buy-robux-free_GM431946152.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/master-coin-hack-app_GM406889139.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/minecraft-kill-aura_GM479516143.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/how-many-levels-does-coin-master-have_GM406889139.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/coin-master-get-free-spins_GM406889139.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/free-spin-coin-master-iphone_GM406889139.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/coin-master-hack-xyz_GM406889139.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/coin-master-online_GM406889139.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/coin-master-70-spin-link-2021_GM406889139.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/free-robux-that-actually-works_GM431946152.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/free-minecraft-wallpaper_GM479516143.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/coin-master-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/hack-para-coin-master-singapore_GM406889139.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/coin-master-hack-apk-2021-download_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_off00004eeb.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4EEB 24236 bytes
SHA-256: 96cc67fc7d4cc5b69859802a171dd33e2e5e6dfb1076980b973a673e79e03d0d
font_01_sfnt_off00008694.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8694 18356 bytes
SHA-256: 7e836b6261bebb63fda2bc6c603fa398fe0a548bc6334e21915c3f4956160db8

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