Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2b7fe0fa56e228a…

MALICIOUS

PDF

34.6 KB Created: 2021-07-03 23:04:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 9ca55704c6c9fd8f755d81032a1ef300 SHA-1: 4bb86867b899688045c5efa4e789e03c5a11a325 SHA-256: f2b7fe0fa56e228ace91324d9209dcd643b68d3eb96d4668b2b1eafbfb53f55b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains multiple embedded links that redirect to known malicious infrastructure, specifically promoting 'game hacks' and 'free generators'. The primary lure appears to be related to obtaining Minecraft Bedrock for free. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly suggest it's designed to exploit user interest in free game items, leading them to potentially malicious download sites or further exploit chains.

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-for-free-game-hack In PDF document text
    • http://perpus.unpam.ac.id/repository/coin-master-mod-apk-latest-hack-with-unlimited-free-spins_GM406889139.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/haktuts-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/roblox-mad-city-hack-deutsch_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/mad-city-unlimited-money-hack-roblox-2-26-2021_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/minecraft-windows-10-edition-hacks_GM479516143.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/www-robux_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/free-robux-or-real-without-email-needed_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/free-roblox-shirt-templates_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/free-roblox-accounts-with-robux-that-work-not-banned-2021_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/minecraft-free-download-ipad_GM479516143.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/coin-master-hack-spins_GM406889139.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/free-robux-com-no-verification_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/minecraft-hacks-18-9_GM479516143.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/how-to-get-free-robux-on-chromebook_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/coin-master-hack-tool-without-verification_GM406889139.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/coin-master-hack-club_GM406889139.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/free-minecraft-shaders_GM479516143.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/minecraft-free-minecraft_GM479516143.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_off00003206.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3206 22240 bytes
SHA-256: d36a424283dc9c4f1d91cd96e4c0aae15f9b91b2037f860d48c6b5944786fcba
font_01_sfnt_off00006357.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6357 18720 bytes
SHA-256: c742bcd1c374999856cb58b617e88ac916dcbdb18ed5de5e0dbcbe2f186b40e0

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