Malicious PDF — malware analysis report

Static analysis result for SHA-256 94171486bb2bb8f1…

MALICIOUS

PDF

35.1 KB Created: 2021-06-30 04:53:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 8facf9272b2041d6a7e05ab7d62bce70 SHA-1: c84e4ff4db9bbfaf6adf7652fc655a349e8805c6 SHA-256: 94171486bb2bb8f1ea211773c9e5d9c4e09d47925613a611e00eb758d2b4c649
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document employs a lure related to game hacks and free Robux to trick users into clicking malicious links. The primary link, http://netcdn.co/app/431946152/hack-dev-api-roblox-game-hack, is identified as a malicious redirector. While no scripts were extracted, the PDF structure and embedded URLs strongly suggest an attempt to lead the user to a malicious site, likely for further exploitation or credential harvesting.

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/hack-dev-api-roblox-game-hack In PDF document text
    • http://digilib-ppsunisma.ac.id/repository/free-case-code-for-arsenal-roblox_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/exploit-cheat-in-roblox-2021_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/how-do-i-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/download-roblox-hack-update-proxo_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/win-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/change-leader-stats-roblox-hack_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/how-get-free-robux-on-pc_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/best-game-to-hack-on-in-roblox_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/how-to-work-get-a-roblox-hack-gui-to-work_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/rorewards-com-earn-free-robux-for-roblox_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/roblox-unlock-all-gamepass-free-pastebin_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/how-to-get-free-robux-no-survey-no-sam_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/free-mobile-24-robux_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/how-to-get-coin-master-card-free_GM406889139.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/free-candy-script-roblox-pastebin_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/facebook-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/room-cheats-roblox_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/hack-particle-roblox_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_off00003156.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3156 22412 bytes
SHA-256: 86ee12431fc610a629dd2ca1d47c99e5ff84875332272597d3267201d8098aa8
font_01_sfnt_off0000635c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x635C 19236 bytes
SHA-256: 7ca9b364fe9b81b15e386208703d82e24e4d33fdf86b89e83fb39939d6d4a04a

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