Malicious PDF — malware analysis report

Static analysis result for SHA-256 200c6d03c0d5be3c…

MALICIOUS

PDF

36.4 KB Created: 2021-07-04 22:44:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 977072ef101ef8d0a36c9bdbdfa8658d SHA-1: 37aabedf4f7e3dc4a9e329436381a8b072c65738 SHA-256: 200c6d03c0d5be3c23fb1d08c0f5caf0f5e593e5f93f1bb5b8232044b3e522d7
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links, including one pointing to a known malicious redirector infrastructure. The document body and heuristics suggest a lure related to game hacks and free downloads, which is a common tactic for distributing malware or conducting phishing. No scripts were extracted, but the presence of malicious links indicates an attempt to redirect the user to a harmful site.

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/479516143/minecraft-windows-10-edition-free-download-game-hack In PDF document text
    • http://www.library.umbjm.ac.id/repository/how-to-get-free-hair-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/how-to-hack-roblox-on-windows-10_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/download-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/roblox-report-hacker_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/coin-master-daily-free-spins-link-facebook_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/how-to-get-2021-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/is-windows-10-minecraft-free_GM479516143.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/free-spin-and-coin-blogspot-com_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/robux-hack-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/descargar-roblox-hack-robux-pc_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/coins-for-pokemon-go-free_GM1094591345.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/tiktok-free-wallpapers_GM835599320.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/minecraft-xray-hack_GM479516143.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/robux-game_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/how-to-get-free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/coin-master-hack-2021-without-verification_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/coin-master-hack-apk-35-18_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/how-to-make-free-robux_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/can-i-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/free-robux-without-verification-2021_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_off000037ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x37CA 22336 bytes
SHA-256: 66b6a9f065b900c5dc8096121c7ef6d568ba725ff75e2e19d6ed80201de77f8c
font_01_sfnt_off00006930.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6930 19056 bytes
SHA-256: 1fbd96916373957abb899fec4ad8fc3866d81e0306805064b2b02ab8661ee979

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