Malicious PDF — malware analysis report

Static analysis result for SHA-256 d262b9d9cbd9a0d1…

MALICIOUS

PDF

35.4 KB Created: 2021-07-04 04:50:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 26609005aea408d505b28fef82043288 SHA-1: 4da4aa1b653948fbddec05874362ce8fa2ae0f96 SHA-256: d262b9d9cbd9a0d16a3196764351f1efc21f84594e98552cbe8729b09429da79
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'game hacks' and 'free generators'. The primary lure URL is http://netcdn.tw/app/479516143/how-to-get-minecraft-for-free-ios-game-hack. While no scripts were extracted, the document's structure and embedded URLs strongly indicate a phishing or social engineering attempt to redirect users to potentially harmful content.

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-for-free-ios-game-hack In PDF document text
    • https://mountainholidaytreks.com/userfiles/files/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/minecraft-hack-mod_GM479516143.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/roblox-boxing-game-hack_GM431946152.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/minecraft-free-download-chromebook_GM479516143.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/free-robux-games_GM431946152.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/free-roblox-hack_GM431946152.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/roblox-place-rewards_GM431946152.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/scaffold-minecraft-hack_GM479516143.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/get-free-robux-today_GM431946152.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/free-apk-mods-coin-master_GM406889139.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/paginas-para-descargar-hacks-de-roblox_GM431946152.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/minecraft-java-free_GM479516143.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/hack-para-coin-master-singapore_GM406889139.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/minecraft-pe-texture-packs-free-download_GM479516143.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/worst-client_GM479516143.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/master-coin-free-link_GM406889139.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/free-roblox-clothes-2021_GM431946152.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/how-to-give-robux-on-mobile_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_off000034a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x34A1 22948 bytes
SHA-256: 77a4511a1117ef56c28cf455b301f6efc11e9a82e5c349a59f5d441c3fb33685
font_01_sfnt_off00006831.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6831 18164 bytes
SHA-256: 3bdff242c02567ee207b71fad6ef4d90e4cc38b5842f7ad781c544ed1b5ff3f4

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