Malicious PDF — malware analysis report

Static analysis result for SHA-256 706f290dcaaaf367…

MALICIOUS

PDF

35.4 KB Created: 2021-06-18 04:16:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 4d8b6e1f856ab98cedada7eeb1527f2b SHA-1: 0d0c7223ab2f9fe8c253b56edc3b0ad70b5b6ded SHA-256: 706f290dcaaaf3672e11d139e828d355104921361d6ab75f84b31f57f465a44f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure for free game currency and hacks, directing users to a known malicious redirector. The document body contains multiple embedded URLs that likely lead to further malicious content or downloads. The ML classifier strongly indicates malicious intent, and the presence of redirector links confirms a malicious workflow.

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.co/app/431946152/free-robux-with-no-downloading-games-game-hack In PDF document text
    • http://library.ft.upnvj.ac.id/repository/minecraft-free-exe_GM479516143.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/coin-master-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/coin-master-hack-tool-access-online-generator_GM406889139.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/mc-update_GM479516143.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/master-coins-free_GM406889139.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/coin-master-hack-unlimited-spins_GM406889139.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/roblox-jalbreak-hack_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/is-java-minecraft-free_GM479516143.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/robux-free-robux_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/how-to-get-free-robux-gift-cards_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/free-spins-link-in-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/roblox-bloxburg-hack_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/free-robux-without-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/coin-master-free-spins-link-today-new_GM406889139.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/how-to-get-minecraft-bedrock-edition-for-free_GM479516143.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/coin-master-hacks_GM406889139.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/coinmaster-fan-page_GM406889139.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/robux-gift-card-free_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_off00002f52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F52 22724 bytes
SHA-256: c2584853ad527eeccef6c2e51b881147d0f07cdc7d5936d95b840b94073f178c
font_01_sfnt_off00006256.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6256 20144 bytes
SHA-256: 3cb5a7c981a25910dbecc9dc7b3d38b09eab4405e3b3451a321fa96928ae2a75

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