Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d2d9489fd17f944…

MALICIOUS

PDF

33.9 KB Created: 2021-06-30 10:17:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: b98fc3467279af21ce8bda2a904d6924 SHA-1: 561386dfe534aeae456a1792720d18fe3cf0a7ab SHA-256: 0d2d9489fd17f9444c305dfae1bec835ce5d4a92f1122de88283234a74add671
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to redirector infrastructure, specifically advertising 'free generators' and 'game hacks' for popular games like Roblox and Coin Master. The primary link, http://netcdn.co/app/431946152/roblox-free-online-unblocked-game-hack, is flagged as a malicious redirector. The document's content and heuristic firings strongly indicate a social engineering lure designed to lead users to potentially malicious websites.

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.co/app/431946152/roblox-free-online-unblocked-game-hack In PDF document text
    • http://wwic.wales/uploads/files/files/coin-master-mod_GM406889139.pdfIn PDF document text
    • http://wwic.wales/uploads/files/files/easy-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://wwic.wales/uploads/files/files/i-hacked-roblox-account_GM431946152.pdfIn PDF document text
    • http://wwic.wales/uploads/files/files/free-robux-generator-no-virus_GM431946152.pdfIn PDF document text
    • http://wwic.wales/uploads/files/files/how-to-get-hacks-in-roblox_GM431946152.pdfIn PDF document text
    • http://wwic.wales/uploads/files/files/how-to-get-free-robux-2021-easy-no-download_GM431946152.pdfIn PDF document text
    • http://wwic.wales/uploads/files/files/coin-master-cheats_GM406889139.pdfIn PDF document text
    • http://wwic.wales/uploads/files/files/free-robux-scam_GM431946152.pdfIn PDF document text
    • http://wwic.wales/uploads/files/files/roblox-coin-hack-mm2-dll_GM431946152.pdfIn PDF document text
    • http://wwic.wales/uploads/files/files/roblox-free-online-game_GM431946152.pdfIn PDF document text
    • http://wwic.wales/uploads/files/files/minecraft-18-9-hacked-client_GM479516143.pdfIn PDF document text
    • http://wwic.wales/uploads/files/files/roblox-free-clothes-hack_GM431946152.pdfIn PDF document text
    • http://wwic.wales/uploads/files/files/minecraft-free-unblocked_GM479516143.pdfIn PDF document text
    • http://wwic.wales/uploads/files/files/coin-master-hack-programers_GM406889139.pdfIn PDF document text
    • http://wwic.wales/uploads/files/files/roblox-hacks-2021_GM431946152.pdfIn PDF document text
    • http://wwic.wales/uploads/files/files/coin-master-hack-apk-android_GM406889139.pdfIn PDF document text
    • http://wwic.wales/uploads/files/files/free-dominus-rex-and-messor-roblox-youtube_GM431946152.pdfIn PDF document text
    • http://wwic.wales/uploads/files/files/coin-master-free-generator_GM406889139.pdfIn PDF document text
    • http://wwic.wales/uploads/files/files/free-robux-that-actually-works_GM431946152.pdfIn PDF document text
    • http://wwic.wales/uploads/files/files/daily-free-spins-coin-master-2021_GM406889139.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_off00002e23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E23 22256 bytes
SHA-256: dcd80971c3bbd641e0b60fc88c79705fd079d483bdc4c391f46aca45a2afb752
font_01_sfnt_off00005f5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F5D 19112 bytes
SHA-256: ee2415481b3413ff364266ba338b7a8f8bc826f89345c265306727bb045795ef