Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e3d0d3e6ab3fa34…

MALICIOUS

PDF

34.2 KB Created: 2021-07-03 14:53:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 380ed5f5f268573f5fc529861f64f947 SHA-1: 57e35dbdc275964eba3ade12c7cb88f18e738944 SHA-256: 7e3d0d3e6ab3fa349138cb0c296bacc55628487cebcf2502c0ef799f54369745
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to game hacks and free in-game items, directing users to a malicious URL. This URL likely leads to a second-stage payload or a phishing page. The presence of multiple game-related lures and the ML classifier's high confidence indicate a malicious intent to deceive the user.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/406889139/free-pet-food-on-coin-master-game-hack PDF link annotation
    • http://hosoffices.com/ckfinder/userfiles/files/roblox-hacking-with-mr-bean_GM431946152.pdfIn PDF document text
    • http://hosoffices.com/ckfinder/userfiles/files/minecraft-bedrock-hacks_GM479516143.pdfIn PDF document text
    • http://hosoffices.com/ckfinder/userfiles/files/my-account-got-hacked-roblox_GM431946152.pdfIn PDF document text
    • http://hosoffices.com/ckfinder/userfiles/files/bc-free-roblox-android_GM431946152.pdfIn PDF document text
    • http://hosoffices.com/ckfinder/userfiles/files/hacks-para-tener-robux-gratis-2021_GM431946152.pdfIn PDF document text
    • http://hosoffices.com/ckfinder/userfiles/files/hack-comandos-admin-roblox_GM431946152.pdfIn PDF document text
    • http://hosoffices.com/ckfinder/userfiles/files/coin-master--hack_GM406889139.pdfIn PDF document text
    • http://hosoffices.com/ckfinder/userfiles/files/free-account-and-password-roblox-generator_GM431946152.pdfIn PDF document text
    • http://hosoffices.com/ckfinder/userfiles/files/minecraft-free-download-windows-10_GM479516143.pdfIn PDF document text
    • http://hosoffices.com/ckfinder/userfiles/files/how-to-download-minecraft-windows-10-edition-for-free_GM479516143.pdfIn PDF document text
    • http://hosoffices.com/ckfinder/userfiles/files/minecraft-skins-free-girl_GM479516143.pdfIn PDF document text
    • http://hosoffices.com/ckfinder/userfiles/files/scp-lockdown-roblox-game-cheats_GM431946152.pdfIn PDF document text
    • http://hosoffices.com/ckfinder/userfiles/files/free-robux-and-tickets-on-roblox-hack_GM431946152.pdfIn PDF document text
    • http://hosoffices.com/ckfinder/userfiles/files/free-roblox-glasses_GM431946152.pdfIn PDF document text
    • http://hosoffices.com/ckfinder/userfiles/files/coin-master-hacks-xyz_GM406889139.pdfIn PDF document text
    • http://hosoffices.com/ckfinder/userfiles/files/free-robux-with-no-human-verification_GM431946152.pdfIn PDF document text
    • http://hosoffices.com/ckfinder/userfiles/files/hack-week-2021-roblox_GM431946152.pdfIn PDF document text
    • http://hosoffices.com/ckfinder/userfiles/files/roblox-hacks-2021_GM431946152.pdfIn PDF document text
    • http://hosoffices.com/ckfinder/userfiles/files/how-to-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • http://hosoffices.com/ckfinder/userfiles/files/free-robux-no-survey-or-human-verification_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00002ded.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2DED 23280 bytes
SHA-256: 118bfb18fcc61a96f36b6d534608eb9aada2b5784ae5397e324bed1f5c273f27
font_01_sfnt_off000062b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62B2 18324 bytes
SHA-256: fb998ec370fa4b3e66808c402bc8dd76aab549c6c885f481dee46b46c8328737

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