Malicious PDF — malware analysis report

Static analysis result for SHA-256 76b3da0ad8aa5e01…

MALICIOUS

PDF

35.2 KB Created: 2021-06-27 07:48:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-25
MD5: bd4030e5114c10484458434830444c92 SHA-1: 4aa35068bb3c54768bb2fbf31134e09b326b0c24 SHA-256: 76b3da0ad8aa5e01eb1fb643e9d12662bf104e092e622784bc6a17c6732b958c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to free game hacks and generators, specifically mentioning Roblox and Coin Master. It contains multiple embedded URLs, with one identified as a malicious redirector pointing to 'http://netcdn.co/app/431946152/make-your-own-roblox-skin-for-free-game-hack'. The document's structure and embedded links strongly suggest it is designed to lead users to potentially harmful content or further malicious downloads, likely delivered via a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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.co/app/431946152/make-your-own-roblox-skin-for-free-game-hack In PDF document text
    • http://muslib.unmus.ac.id//repository/roblox-skins-boy-free_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/free-roblox-accounts-with-robux-that-work-not-banned_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/roblox-admin-hack_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/wurst-112_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/free-roblox-codes_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-spins-on-coin-master-game_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/free-spin-and-win-coin-master_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-spins-coin-master-2021-hack_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/safe-mac-roblox-auto-clicker-free_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-youtube-roblox-banner-template_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/free-roblox-accounts-dantdm_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/tower-of-hell-roblox-hack_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-apk-hack-download_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/cheat-engine-hxd-roblox_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-work-at-a-pizza-place-cheats-2021_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/www-rbxhut-com_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-get-free-stuff-in-roblox-2021_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-coins-coin-master-daily_GM406889139.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_off00002f43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F43 23336 bytes
SHA-256: e4bb76e7eb4b9548f64e33d2d5debaef808ba9964f9e05df3ababb0a9f534290
font_01_sfnt_off00006335.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6335 19604 bytes
SHA-256: fced6bed7276aa0179ae44cad1c23e20ea41fc2a3fc31130bac96572f3bad5d3

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