Malicious PDF — malware analysis report

Static analysis result for SHA-256 afd83d71ac74b16b…

MALICIOUS

PDF

33.7 KB Created: 2021-07-05 11:46:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 5b19fcd3b56e5e2f4c79cb5f6d084f87 SHA-1: 1f4fa1d711b35490e5e5f3535864acb294e14f42 SHA-256: afd83d71ac74b16b119be74c73065f88af8cb62e88f520d541d92bd9e4459955
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to websites offering game hacks and generators, such as 'coin-master-haktuts-game-hack'. The presence of a visual download button lure and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content. No scripts were extracted, but the document body and heuristics strongly suggest a phishing or scam lure.

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/coin-master-haktuts-game-hack PDF link annotation
    • http://handimanlibrary.org/repository/daily-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://handimanlibrary.org/repository/hack-coin-master-8-ball-pool_GM406889139.pdfIn PDF document text
    • http://handimanlibrary.org/repository/roblox-group-free-robux_GM431946152.pdfIn PDF document text
    • http://handimanlibrary.org/repository/coin-master-free-spin-link-new_GM406889139.pdfIn PDF document text
    • http://handimanlibrary.org/repository/roblox-free-antlers_GM431946152.pdfIn PDF document text
    • http://handimanlibrary.org/repository/open-coin-master_GM406889139.pdfIn PDF document text
    • http://handimanlibrary.org/repository/fb-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://handimanlibrary.org/repository/bloxland-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://handimanlibrary.org/repository/cheats-in-arsenal-roblox_GM431946152.pdfIn PDF document text
    • http://handimanlibrary.org/repository/descargar-menu-de-hacks-para-roblox_GM431946152.pdfIn PDF document text
    • http://handimanlibrary.org/repository/how-to-get-the-ultimate-victory-for-free-in-roblox_GM431946152.pdfIn PDF document text
    • http://handimanlibrary.org/repository/free-links-to-coin-master_GM406889139.pdfIn PDF document text
    • http://handimanlibrary.org/repository/rbx-roblox_GM431946152.pdfIn PDF document text
    • http://handimanlibrary.org/repository/coin-master-hack-version_GM406889139.pdfIn PDF document text
    • http://handimanlibrary.org/repository/cheat-ro-ghoul-roblox_GM431946152.pdfIn PDF document text
    • http://handimanlibrary.org/repository/free-draw-roblox_GM431946152.pdfIn PDF document text
    • http://handimanlibrary.org/repository/minecraft-server-free-trial_GM479516143.pdfIn PDF document text
    • http://handimanlibrary.org/repository/robux-hacks-2021_GM431946152.pdfIn PDF document text
    • http://handimanlibrary.org/repository/blackberry-hacks-roblox_GM431946152.pdfIn PDF document text
    • http://handimanlibrary.org/repository/free-things-on-roblox_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
font_00_sfnt_off00002ecf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2ECF 22648 bytes
SHA-256: 5f0d17df90d45cafdfd5ac738c64ac9efc72058ef20aa9a80bcb713a6fd82082
font_01_sfnt_off0000616b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x616B 18144 bytes
SHA-256: 8daa1128151207aa24d82529a6eedb767dde599c849e3c144e38d1777f737c1a

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