Malicious PDF — malware analysis report

Static analysis result for SHA-256 48339424ad6e1806…

MALICIOUS

PDF

35.0 KB Created: 2021-07-04 04:07:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26
MD5: f763fc75917e266ad0dd261e86bd3e11 SHA-1: 8a122fd856686db4251b5c88364380cdfd132351 SHA-256: 48339424ad6e1806962f2cb658a6eced718b55dd059570657d8b892c3b124bfa
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, including one that masquerades as a "free generator / game hack". The document body explicitly contains the URL "http://netcdn.tw/app/479516143/how-to-get-minecraft-bedrock-edition-for-free-game-hack", which is identified as a malicious redirector. This suggests the primary purpose is to redirect users to potentially harmful websites, likely for further exploitation or phishing. No scripts were extracted, but the embedded URLs and heuristic firings strongly indicate a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/479516143/how-to-get-minecraft-bedrock-edition-for-free-game-hack In PDF document text
    • http://kdlscaffolding.co.uk/uploaded_files/userfiles/files/coin-master-heaven-daily-free-spins_GM406889139.pdfIn PDF document text
    • http://kdlscaffolding.co.uk/uploaded_files/userfiles/files/roblox-cheats-for-dead-rising-2_GM431946152.pdfIn PDF document text
    • http://kdlscaffolding.co.uk/uploaded_files/userfiles/files/roblox-diamond-hack_GM431946152.pdfIn PDF document text
    • http://kdlscaffolding.co.uk/uploaded_files/userfiles/files/tiradas-coin-master_GM406889139.pdfIn PDF document text
    • http://kdlscaffolding.co.uk/uploaded_files/userfiles/files/how-to-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • http://kdlscaffolding.co.uk/uploaded_files/userfiles/files/free-roblox-printables_GM431946152.pdfIn PDF document text
    • http://kdlscaffolding.co.uk/uploaded_files/userfiles/files/minecraft-pe-mod-menu_GM479516143.pdfIn PDF document text
    • http://kdlscaffolding.co.uk/uploaded_files/userfiles/files/how-do-i-get-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://kdlscaffolding.co.uk/uploaded_files/userfiles/files/free-things-on-roblox_GM431946152.pdfIn PDF document text
    • http://kdlscaffolding.co.uk/uploaded_files/userfiles/files/how-to-hack-roblox-go-through-walls-with-shift-lock_GM431946152.pdfIn PDF document text
    • http://kdlscaffolding.co.uk/uploaded_files/userfiles/files/demon-roblox_GM431946152.pdfIn PDF document text
    • http://kdlscaffolding.co.uk/uploaded_files/userfiles/files/console-roblox-hack_GM431946152.pdfIn PDF document text
    • http://kdlscaffolding.co.uk/uploaded_files/userfiles/files/aimbot-download-free-roblox_GM431946152.pdfIn PDF document text
    • http://kdlscaffolding.co.uk/uploaded_files/userfiles/files/free-spins-on-coin-master-game_GM406889139.pdfIn PDF document text
    • http://kdlscaffolding.co.uk/uploaded_files/userfiles/files/hack-engines-for-roblox-swordburst-2_GM431946152.pdfIn PDF document text
    • http://kdlscaffolding.co.uk/uploaded_files/userfiles/files/coin-master-free_GM406889139.pdfIn PDF document text
    • http://kdlscaffolding.co.uk/uploaded_files/userfiles/files/free-robux-grouos_GM431946152.pdfIn PDF document text
    • http://kdlscaffolding.co.uk/uploaded_files/userfiles/files/roblox-premium-free_GM431946152.pdfIn PDF document text
    • http://kdlscaffolding.co.uk/uploaded_files/userfiles/files/what-games-on-roblox-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://kdlscaffolding.co.uk/uploaded_files/userfiles/files/hacks-to-get-free-robux_GM431946152.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_off00003395.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3395 22420 bytes
SHA-256: 3515e86e0f5d87696e3909b8e9bececf5cdb0e8ec6dcdf379f31c757c610e28c
font_01_sfnt_off000064b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64B7 18720 bytes
SHA-256: 8749f690aacce1ff2d40288e6cd65b377fcb09a0c55c4616b39fbcf3e372c4de

Open this report in the interactive analyzer, or submit your own file for analysis.