Malicious PDF — malware analysis report

Static analysis result for SHA-256 4fe6c5aa9090f12a…

MALICIOUS

PDF

33.5 KB Created: 2021-06-19 18:36:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 2c94c727455d13d91c17ca73a1fc9493 SHA-1: 308f1387efc1eaed187d9f572808d0cdf337b17b SHA-256: 4fe6c5aa9090f12aaf22de6a08251ed71deb31829754953cad917912e27759fb
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded URLs, with a primary link identified as a malicious redirector. This link, 'http://netcdn.co/app/431946152/roblox-cheat-engine-online-game-hack', is presented as a lure for game hacks or generators. The document body and heuristics confirm the intent to redirect users to potentially harmful content, likely for further exploitation or malware delivery.

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/roblox-cheat-engine-online-game-hack In PDF document text
    • http://digilib-pps.unja.ac.id/repository/free-spins-coin-master-unlimited_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/free-roblox-website_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/can-you-get-a-warn-for-hacking-on-roblox_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/minecraft-windows-10-hacked-client_GM479516143.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/robuxmatch-com-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/roblox-fun-com-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/coin-master-hack-tool-exe_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/games-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/roblox-dragon-ball-rage-cheats_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/roblox-artmoney-robux-hack_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/coin-master-hack-game-download-ios_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/hacker-song-roblox-id_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/free-robux-place_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/free-instant-catalog-item-roblox-2021_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/pastebin-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/free-roblox-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/roblox-controversy_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/freecoins_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/minecraft-dungeons-free-download-pc_GM479516143.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/20-free-spins-coin-master_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_off00002f1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F1A 21572 bytes
SHA-256: 0fe72249a961a2d95389e5727ca7df0bd7d56825842f217f65cb0c3a2f2b7078
font_01_sfnt_off00005e74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E74 18876 bytes
SHA-256: a0daf6c1c429783353134e6f4841fd35d27363132144a9959d836e58a91309cc

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