Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab75feb415f26e19…

MALICIOUS

PDF

42.2 KB Created: 2021-04-23 12:09:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: b3758ed5f7e0a83d210fd348157e159a SHA-1: 955b612c3e55d1b1bf2884253c1868b5dc8ce51c SHA-256: ab75feb415f26e19318bde776830ed5ce1ade759f1dcc34de2368529daf1c085
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to free game items and hacks, directing users to a malicious URL. The ML classifier strongly indicated maliciousness, and the presence of external URIs and a download button lure further support this. No scripts were extracted, but the document's structure and embedded links suggest it is designed to lead the user to a potentially harmful site.

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.
  • 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 https://netsecure.top/app/431946152/free-adidas-clothes-on-roblox-game-hack PDF link annotation
    • http://www.nelsonssales.com/media/storage/editor/files/roblox-hub-free-robux.pdfIn PDF document text
    • http://www.nelsonssales.com/media/storage/editor/files/roblox-hack-no-human-verification-2021-pc.pdfIn PDF document text
    • http://www.nelsonssales.com/media/storage/editor/files/free-items-katalog-roblox-glitch.pdfIn PDF document text
    • http://www.nelsonssales.com/media/storage/editor/files/f3x-roblox-hack.pdfIn PDF document text
    • http://www.nelsonssales.com/media/storage/editor/files/are-games-on-roblox-free.pdfIn PDF document text
    • http://www.nelsonssales.com/media/storage/editor/files/roblox-mod-apk-free-shopping.pdfIn PDF document text
    • http://www.nelsonssales.com/media/storage/editor/files/how-to-hack-into-anybodys-roblox-account-in-5-minutes.pdfIn PDF document text
    • http://www.nelsonssales.com/media/storage/editor/files/how-do-you-really-get-free-robux.pdfIn PDF document text
    • http://www.nelsonssales.com/media/storage/editor/files/game-cheats-for-roblox.pdfIn PDF document text
    • http://www.nelsonssales.com/media/storage/editor/files/free-robux-and-tickets-on-roblox-hack.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_003_off000041f2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x41F2 27604 bytes
SHA-256: dfa29eee6a956a5101c3ea9f54fc84768c721183baf12812a1a2599eeb2a7a98
font_01_sfnt_off00008216.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8216 18740 bytes
SHA-256: 9e1d063087f2c84ec67f0f2f26a01d0faf7476a598f73d0e600c3addf7e37321

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