Malicious PDF — malware analysis report

Static analysis result for SHA-256 cbbb5d493c68bdf4…

MALICIOUS

PDF

45.0 KB Created: 2021-04-30 15:22:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 9c271500dc98687361d7e02188e23c9c SHA-1: a8db950cdcaf49a03a3e47c6d186a25ad0808b4c SHA-256: cbbb5d493c68bdf42c0437ffc797a0e36c635b3a02ac353089bf6483d24c38d0
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites, including a known malicious redirector, under the guise of game hacks and generators. The document body and heuristics indicate a lure to trick users into clicking these links, likely leading to further malicious content or downloads. While no scripts were directly extracted, the PDF structure and embedded links suggest an attempt to exploit user interest in game cheats.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9857

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/boku-no-roblox-remastered-hack-cash-game-hack In PDF document text
    • https://www.tiendagrouppln.com/ckfinder/userfiles/files/hacks-for-roblox-pc.pdfIn PDF document text
    • https://www.tiendagrouppln.com/ckfinder/userfiles/files/roblox-sword-fight-on-the-heights-original-how-to-hack.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/how-to-get-free-robux-easy-real.pdfIn PDF document text
    • https://www.tiendagrouppln.com/ckfinder/userfiles/files/roblox-bird-simulator-hack-script.pdfIn PDF document text
    • https://www.tiendagrouppln.com/ckfinder/userfiles/files/how-to-get-your-robux-back-without-hacking-or-buying.pdfIn PDF document text
    • https://www.tiendagrouppln.com/ckfinder/userfiles/files/roblox-dbz-rage-hack.pdfIn PDF document text
    • https://www.tiendagrouppln.com/ckfinder/userfiles/files/free-robux-no-verification-and-no-survey.pdfIn PDF document text
    • https://www.tiendagrouppln.com/ckfinder/userfiles/files/free-robux-no-scams-2021.pdfIn PDF document text
    • https://www.tiendagrouppln.com/ckfinder/userfiles/files/free-roblox-groups-with-funds.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004342.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4342 26504 bytes
SHA-256: 588171a57c187d1fa7ec753e69abc60a49878db394c3461c6f9ca1f3c59be67f
font_01_sfnt_off00007eff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EFF 3884 bytes
SHA-256: 40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf
font_02_sfnt_off00008ba7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BA7 19024 bytes
SHA-256: 9298da3923d0b517c99ea85da206d48763dc3ffcae02c2c7a3c0be7c3e27136a

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