Malicious PDF — malware analysis report

Static analysis result for SHA-256 9103a2a3f2197509…

MALICIOUS

PDF

33.6 KB Created: 2021-07-06 21:30:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 85e14b455f8a0b246539b6b1733bd140 SHA-1: 1870a848825d2ddc3bd1c4ed5a2a5a2d18cbf9d4 SHA-256: 9103a2a3f2197509607784f500a6dd3fd4ded21bd49c0e5760bc94750eb7b784
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to external websites, including a known malicious redirector at http://netcdn.tw/app/479516143/how-to-get-minecraft-bedrock-edition-for-free-game-hack. The document body and heuristics indicate a lure for free game hacks and in-game currency, designed to entice users to click these links. No scripts were extracted, but the presence of malicious redirectors and the lure suggest the document is intended to lead users to potentially harmful content or further malware downloads.

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/how-to-get-minecraft-bedrock-edition-for-free-game-hack In PDF document text
    • http://samavetpharm.com/userfiles/files/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/coin-master-deals_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/tiktok-free-hong-kong_GM835599320.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/free-realistic-minecraft-texture-packs_GM479516143.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/get-free-lives-on-coin-master_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/how-to-hack-in-roblox-prison-life_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/free-spins-coin-master-october-17-2021_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/free-robux-for-real-2021_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/haktuts-coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/toolbox-for-minecraft-pe-ios_GM479516143.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/how-to-hack-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/coinmaster-free-spins-link_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/free-roblox-clothes-2021_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/minecraft-hack-app_GM479516143.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/coin-master-hack-mod-apk-android-1_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/minecraft-windows-10-key-free_GM479516143.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/adopt-me-hack-tool-roblox_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_off00003012.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3012 21588 bytes
SHA-256: 0cbe34a476ccd87b9b351b705047fdf7840a26218dd690ea9886615bba619fce
font_01_sfnt_off00005f3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F3C 18720 bytes
SHA-256: 8749f690aacce1ff2d40288e6cd65b377fcb09a0c55c4616b39fbcf3e372c4de

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