Malicious PDF — malware analysis report

Static analysis result for SHA-256 568238b182392db5…

MALICIOUS

PDF

34.9 KB Created: 2021-06-17 17:22:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 06f7956ad8268c68dae76cc505656983 SHA-1: 6dd5e911575938cd6cc3f07b605c47e20d01f837 SHA-256: 568238b182392db54a2ab147a69d80df60dec83904ee554ea43f415538c96b71
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites, masquerading as generators or hacks for popular games like Roblox and Minecraft. These links, particularly the one to 'netcdn.co', are flagged as malicious redirectors. The document body, though partially corrupted, reinforces this lure by mentioning game hacks and providing URLs. The presence of these malicious links and the deceptive content strongly suggest a phishing or malware distribution attempt.

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-sand-simulator-hack-android-2021-game-hack In PDF document text
    • http://dopheide.be/images/give-free-robux_GM431946152.pdfIn PDF document text
    • http://dopheide.be/images/how-to-get-roblox-robux-for-free-without-downloading-apps_GM431946152.pdfIn PDF document text
    • http://dopheide.be/images/free-promo-codes-roblox_GM431946152.pdfIn PDF document text
    • http://dopheide.be/images/wurst-minecraft_GM479516143.pdfIn PDF document text
    • http://dopheide.be/images/free-shirt-templates-roblox_GM431946152.pdfIn PDF document text
    • http://dopheide.be/images/how-to-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://dopheide.be/images/minecraft-server-hacks_GM479516143.pdfIn PDF document text
    • http://dopheide.be/images/roblox-hacks-and-cheats-2021_GM431946152.pdfIn PDF document text
    • http://dopheide.be/images/today-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • http://dopheide.be/images/get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://dopheide.be/images/coin-master-daily-free-rewards_GM406889139.pdfIn PDF document text
    • http://dopheide.be/images/free-tiktok-likes-without-verification_GM835599320.pdfIn PDF document text
    • http://dopheide.be/images/coin-master-spin-hack-2021_GM406889139.pdfIn PDF document text
    • http://dopheide.be/images/minecraft-free-download-unblocked_GM479516143.pdfIn PDF document text
    • http://dopheide.be/images/tryrbx-site-free-robux_GM431946152.pdfIn PDF document text
    • http://dopheide.be/images/earn-free-robux-for-roblox_GM431946152.pdfIn PDF document text
    • http://dopheide.be/images/if-you-delete-minecraft-can-you-redownload-it-for-free_GM479516143.pdfIn PDF document text
    • http://dopheide.be/images/free-roblox-accounts-with-robux-2021_GM431946152.pdfIn PDF document text
    • http://dopheide.be/images/how-to-get-free-clothes-on-roblox_GM431946152.pdfIn PDF document text
    • http://dopheide.be/images/free-roblox-gfx_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_off0000301b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x301B 22268 bytes
SHA-256: ef7b013914e1fc12391deb086f1e0a2a7330760ad1ba0b611cd74a51f152da7e
font_01_sfnt_off0000617d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x617D 19668 bytes
SHA-256: cbecdaf5078062b4e0434a4ac287dfe433df124bb7c63db775ee572de8a12fa4

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