Malicious PDF — malware analysis report

Static analysis result for SHA-256 2bb8dee6eb77f92f…

MALICIOUS

PDF

49.1 KB Created: 2021-04-29 13:38:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 360984c2418ee2bc28c5fe6cc2833766 SHA-1: ffe14a0587888b160111a657bdb32128f7a303e3 SHA-256: 2bb8dee6eb77f92f5326376b4a021e310da900fffa9c756d9b96307923b43412
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links, including one identified as a malicious redirector leading to a 'game hack' lure. The document body, though partially corrupted, contains text related to game hacking and a URL that aligns with the heuristic findings. The presence of embedded links and the nature of the lure suggest an attempt to trick users into visiting malicious sites, likely for further exploitation or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9940

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/how-to-hack-ultimate-driving-roblox-game-hack In PDF document text
    • https://www.tiendagrouppln.com/ckfinder/userfiles/files/free-robux-hack-2021-no-human-verification-no-download.pdfIn PDF document text
    • https://www.tiendagrouppln.com/ckfinder/userfiles/files/how-to-hack-a-group-in-roblox-2021.pdfIn PDF document text
    • https://www.tiendagrouppln.com/ckfinder/userfiles/files/how-to-get-a-free-hat-2021-roblox.pdfIn PDF document text
    • https://www.tiendagrouppln.com/ckfinder/userfiles/files/how-to-get-8-robux-free.pdfIn PDF document text
    • https://www.tiendagrouppln.com/ckfinder/userfiles/files/case-clicker-cheats-roblox.pdfIn PDF document text
    • https://www.tiendagrouppln.com/ckfinder/userfiles/files/free-trial-builders-club-on-roblox.pdfIn PDF document text
    • https://www.tiendagrouppln.com/ckfinder/userfiles/files/free-easy-ways-to-get-robux.pdfIn PDF document text
    • https://www.tiendagrouppln.com/ckfinder/userfiles/files/roblox-admin-hack-2021-november.pdfIn PDF document text
    • https://www.tiendagrouppln.com/ckfinder/userfiles/files/roblox-the-pizzeria-rp-remastered-infinite-coins-hack-2021.pdfIn PDF document text
    • https://www.tiendagrouppln.com/ckfinder/userfiles/files/free-robux-number.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_off000044e2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x44E2 40292 bytes
SHA-256: 6281532a35cdfe3195b3f1e3c3e7d60cc0b7a3a32bd6b54a4003c96e02ef7ef0
font_01_sfnt_off00009ad7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9AD7 19588 bytes
SHA-256: ce0e4b88b319a7eb20969006913b3f4b5e21f549a005b6ddac829d79aa90b90e