Malicious PDF — malware analysis report

Static analysis result for SHA-256 700402635ec8105e…

MALICIOUS

PDF

37.1 KB Created: 2021-06-18 00:56:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 1ced65f80ea6f4b4443fb6da9fa3f694 SHA-1: 555ca270cd5e71b478b913c4c4c4bbcb61d3edb5 SHA-256: 700402635ec8105e96b06fe148b65405bb7a6b2b6b1ec8ed4e61d1646e848a54
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains embedded links that point to a malicious redirector infrastructure, which in turn serves a ZIP archive. The document body and embedded URLs suggest a lure related to game cheats, specifically for Roblox. The ML classifier strongly flagged this PDF as malicious, and the presence of a redirector link confirms its intent to deliver a payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 3

  • 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-cheats.zip-file-size-813-kb-md5-value-94bfbfb41eba4e2021202111f2021f6-game-hack In PDF document text
    • https://www.manmed.info:443/images/free-german-uniform-roblox_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/coin-master-spin-link-today_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/roblox-cheat-command-code_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/how-to-get-free-robux-generator-no-survey_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/cheats-for-jailbreak-roblox-2021_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/tiktok-like-bot-free_GM835599320.pdfIn PDF document text
    • https://www.manmed.info:443/images/roblox-free-hair-boy_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/minecraft-free-install_GM479516143.pdfIn PDF document text
    • https://www.manmed.info:443/images/free-100-robux_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/coin-master-free-spins-link-facebook-page_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/how-to-get-minecraft-windows-10-for-free-2021_GM479516143.pdfIn PDF document text
    • https://www.manmed.info:443/images/minecraft-realms-free-trial_GM479516143.pdfIn PDF document text
    • https://www.manmed.info:443/images/vpn-for-roblox-free_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/tiktok-free-online-games_GM835599320.pdfIn PDF document text
    • https://www.manmed.info:443/images/coin-master-hack-apk-online_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/free-coin-master-spins-blog_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/will-minecraft-dungeons-be-free_GM479516143.pdfIn PDF document text
    • https://www.manmed.info:443/images/rise-of-nations-roblox-cheats_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_off00003271.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3271 22796 bytes
SHA-256: edefc9ec272f22887a7a1e6171e1e687fd29e96f9f8e606a2ab5d4d3cef1859e
font_01_sfnt_off000065aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65AA 21136 bytes
SHA-256: e9ae5d2c57867851d957b1acc24b6fba9314d46821aaefb4fd28337f1b53b26a

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