Malicious PDF — malware analysis report

Static analysis result for SHA-256 0624f507fbc982ef…

MALICIOUS

PDF

40.8 KB Created: 2021-04-29 11:56:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: dcec5751b982e15d3f81e16b01996977 SHA-1: a64f9479f67eca94b724b9718a40e8193f88d7f5 SHA-256: 0624f507fbc982ef0be58328ad1c75d92886d541ad3fffaf19c831be46db36d7
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that are disguised as game hacks or generators, a common lure for phishing and malware distribution. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' specifically flags this behavior. While no scripts were directly extracted, the presence of embedded URLs and the nature of the lure suggest an intent to redirect users to malicious sites, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9941

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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://netcdn.xyz/app/431946152/roblox-free-body-game-hack PDF link annotation
    • https://www.tiendagrouppln.com/ckfinder/userfiles/files/how-to-hack-the-chat-roblox.pdfIn PDF document text
    • https://www.tiendagrouppln.com/ckfinder/userfiles/files/how-to-hack-arsenal-roblox.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-a-free-hat-2021-roblox.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-games-to-download-like-roblox.pdfIn PDF document text
    • https://www.tiendagrouppln.com/ckfinder/userfiles/files/how-t-oget-ant-free-robux-item.pdfIn PDF document text
    • https://www.tiendagrouppln.com/ckfinder/userfiles/files/free-robux-generator-unblocked.pdfIn PDF document text
    • https://www.tiendagrouppln.com/ckfinder/userfiles/files/free-robux-number.pdfIn PDF document text
    • https://www.tiendagrouppln.com/ckfinder/userfiles/files/free-robux-hack-2021-no-human-verification-no-download.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_off00003ff5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3FF5 27032 bytes
SHA-256: 7109f37241aa8c8532cef3ffca209b6712e3c618d7c69b5f235157a09f13dc40
font_01_sfnt_off00007da1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DA1 18300 bytes
SHA-256: 18afd95e8d4f71f33520678a0de9ae8deb20909ba5c2eba22890e369374f989b

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