Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed9deca079a8dc5b…

MALICIOUS

PDF

35.3 KB Created: 2021-06-30 17:31:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 0c7dd67cd6fdc858e4545b3ba86e858b SHA-1: 30fdb2a0232e170cef7e1567f6adecebb0d6e147 SHA-256: ed9deca079a8dc5bdbb1cd30713472a6ad467a6093e9c25167f03a1eb2f9c87d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that are identified as malicious redirectors, specifically luring users with 'game hack' and 'free generator' themes. The primary malicious URL identified is http://netcdn.co/app/431946152/prison-live-on-roblox-was-hacked-in-deutsch-game-hack. The document body and heuristics confirm the intent to redirect users to potentially harmful content, likely for phishing or malware distribution.

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/prison-live-on-roblox-was-hacked-in-deutsch-game-hack In PDF document text
    • http://library.atim.ac.id/repository/view-noclip-hack-roblox_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/coin-master-hack-that-actually-works_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/cm-spin-link_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/free-robux-google-chrome-extension_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/www-bloxland-com-free-robux_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/free-assassin-roblox-coins_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/mcpe-download_GM479516143.pdfIn PDF document text
    • http://library.atim.ac.id/repository/android-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/free-robux-url-hack_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/money-hack-sur-sunset-city-roblox_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/como-conseguir-robux-con-hacks_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/rbxrich-free-robux_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/get-free-robux-today_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/coin-master-32-mod-hack-unlimited_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/guy-goes-to-jail-for-hacking-roblox_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/how-to-get-20210-robux-for-free_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/free-robux-accounts_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
stream_002_off00003085.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3085 22304 bytes
SHA-256: ed08c920bf7f1557220b1c9b5a2a7c1b8e900783ddb11f5f879704d0d75b8bd1
font_01_sfnt_off0000621b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x621B 19992 bytes
SHA-256: 97f883ce71c3851c42575f0b8b20fd69f011bd8728326d000a639e60a6cbd7a9