Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d4986d32dfaee01…

MALICIOUS

PDF

34.2 KB Created: 2021-07-05 07:55:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 00f8429a0058303f918bf45e7c067d60 SHA-1: 36c2e1e93c8e25d77ff3e4e9bbf7e74bc004e847 SHA-256: 3d4986d32dfaee018e3509b4684d1a188cbf2b55665933c32a34f0f38fe5b77f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'free game hacks' and 'generators'. The primary redirector URL is http://netcdn.tw/app/431946152/free-roblox-executor-no-key-game-hack. This indicates a phishing or scam attempt designed to lure users to potentially harmful sites. No scripts were extracted, but the document's structure and embedded URLs strongly suggest a malicious intent to redirect users to malicious content.

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/431946152/free-roblox-executor-no-key-game-hack In PDF document text
    • https://www.sonestad.se/library/repository/coin-master-generator-hack_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/download-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/coin-master-links-to-get-free-spins_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/how-do-i-get-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/minecraft-java-hacks_GM479516143.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/robux-for-kids_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/mcpe-master-coin-hack-apk_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/free-robux-that-actually-works-2021_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/roblox-free-rubox_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/how-to-make-a-minecraft-java-server-for-free_GM479516143.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/minecraft-hacks-18-9_GM479516143.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/coin-master-gameplay_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/free-mods-for-minecraft-pe_GM479516143.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/coin-master-free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/coin-master-spin-rewards_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/roblox-case-clicker-cheat_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/coin-master-free-spins-and-coins-today-gift-reward_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/how-to-hack-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/hack-coin-master-online_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/how-to-change-roblox-username-for-free_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_off00002e8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E8D 22420 bytes
SHA-256: 27de8e8c4ec425bc26d5748922f91f1ee34543667f3a622082343f6cae33f6b8
font_01_sfnt_off00006076.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6076 19072 bytes
SHA-256: a3655b6835e0c341634604fe14b5aa8dd34c828a46700e4c83960d8902ba3df5

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