Malicious PDF — malware analysis report

Static analysis result for SHA-256 920ae9b4938fd1fa…

MALICIOUS

PDF

40.1 KB Created: 2021-04-30 21:13:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 4427b55ca5df168093eba858e451889c SHA-1: 5745c92862f8a02bd8b181db4eda9005aace5295 SHA-256: 920ae9b4938fd1fabb9c0ed74f469a0f3a9a047cf403b6317ef7e5277db8720b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and infrastructure, disguised with a 'Pro Hacks Roblox' theme. The document body, though partially obfuscated, also contains URLs that appear to be lures for game-related cheats or hacks. These elements strongly suggest an attempt to redirect users to malicious websites, likely for further exploitation or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9941

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 https://netcdn.xyz/app/431946152/pro-hacks-roblox-game-hack In PDF document text
    • http://lib.mesjidgedhe.or.id/perpuskauman/repository/how-to-hack-atms-in-roblox-libertay-county.pdfIn PDF document text
    • http://lib.mesjidgedhe.or.id/perpuskauman/repository/free-robux-2021-codes-without-human-verification.pdfIn PDF document text
    • http://lib.mesjidgedhe.or.id/perpuskauman/repository/ipad-roblox-cheats.pdfIn PDF document text
    • http://lib.mesjidgedhe.or.id/perpuskauman/repository/chat-hack-roblox-script.pdfIn PDF document text
    • http://lib.mesjidgedhe.or.id/perpuskauman/repository/hot-get-get-unbanned-in-roblox-hack.pdfIn PDF document text
    • http://lib.mesjidgedhe.or.id/perpuskauman/repository/roblox-admin-hack-dll-2021.pdfIn PDF document text
    • http://lib.mesjidgedhe.or.id/perpuskauman/repository/app-to-hack-roblox-fly-hack.pdfIn PDF document text
    • http://lib.mesjidgedhe.or.id/perpuskauman/repository/roblox-white-hat-hacker.pdfIn PDF document text
    • http://lib.mesjidgedhe.or.id/perpuskauman/repository/roblox-prison-life-cheats.pdfIn PDF document text
    • http://lib.mesjidgedhe.or.id/perpuskauman/repository/how-to-have-free-clothes-on-roblox.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_off00003fd4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3FD4 25704 bytes
SHA-256: 19ed7b9149227bc5cb1295227309fe17cdf370f2efa5e6442876868a76707ed8
font_01_sfnt_off00007abb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7ABB 18336 bytes
SHA-256: 8b27222773fc533df1ba6cd55c3ef6fa6e32fb6aa34f753926c2e7f3e06ec9e8

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