Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca11147339e5f8e7…

MALICIOUS

PDF

35.8 KB Created: 2021-07-01 10:21:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 52cc436611d366ed4d57a2336f715ed0 SHA-1: c041ec8a82bd2fe17753e9cfb883bc1e0699233d SHA-256: ca11147339e5f8e7a62ceb7ca6bcd27ec10652335e5e9f8eeec95849ed36ae0d
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains numerous embedded links, including one directly pointing to 'how-to-get-robux-fast-game-hack'. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting a link farm designed to attract users with promises of game cheats or currency. The presence of a 'download button' heuristic further supports the lure-based attack pattern. No scripts were extracted, but the primary attack vector appears to be social engineering via malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/how-to-get-robux-fast-game-hack PDF link annotation
    • https://elearning.mtsalkhairiyahkpbahari.sch.id/__statics/gudangsoal/files/todays-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • https://elearning.mtsalkhairiyahkpbahari.sch.id/__statics/gudangsoal/files/how-to-hack-coin-master-game-without-root_GM406889139.pdfIn PDF document text
    • https://elearning.mtsalkhairiyahkpbahari.sch.id/__statics/gudangsoal/files/how-to-hack-to-get-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsalkhairiyahkpbahari.sch.id/__statics/gudangsoal/files/free-level-8-exploit-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsalkhairiyahkpbahari.sch.id/__statics/gudangsoal/files/minecraft-dungeons-free_GM479516143.pdfIn PDF document text
    • https://elearning.mtsalkhairiyahkpbahari.sch.id/__statics/gudangsoal/files/haktuts-free-spins_GM406889139.pdfIn PDF document text
    • https://elearning.mtsalkhairiyahkpbahari.sch.id/__statics/gudangsoal/files/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
    • https://elearning.mtsalkhairiyahkpbahari.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-game-just-by-typing_GM431946152.pdfIn PDF document text
    • https://elearning.mtsalkhairiyahkpbahari.sch.id/__statics/gudangsoal/files/hack-robar-cuentas-de-roblox-2021-pastebin-akaka_GM431946152.pdfIn PDF document text
    • https://elearning.mtsalkhairiyahkpbahari.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-life-in-paradise-free-download_GM431946152.pdfIn PDF document text
    • https://elearning.mtsalkhairiyahkpbahari.sch.id/__statics/gudangsoal/files/coin-master-free-daily-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://elearning.mtsalkhairiyahkpbahari.sch.id/__statics/gudangsoal/files/google-roblox-games_GM431946152.pdfIn PDF document text
    • https://elearning.mtsalkhairiyahkpbahari.sch.id/__statics/gudangsoal/files/coin-master-app-free-download_GM406889139.pdfIn PDF document text
    • https://elearning.mtsalkhairiyahkpbahari.sch.id/__statics/gudangsoal/files/no-human-verification-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsalkhairiyahkpbahari.sch.id/__statics/gudangsoal/files/anti-speed-hack-roblox-hack_GM431946152.pdfIn PDF document text
    • https://elearning.mtsalkhairiyahkpbahari.sch.id/__statics/gudangsoal/files/how-to-get-synapse-x-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://elearning.mtsalkhairiyahkpbahari.sch.id/__statics/gudangsoal/files/free-minecraft-realms-to-join_GM479516143.pdfIn PDF document text
    • https://elearning.mtsalkhairiyahkpbahari.sch.id/__statics/gudangsoal/files/free-coin-master-spins-link-facebook_GM406889139.pdfIn PDF document text
    • https://elearning.mtsalkhairiyahkpbahari.sch.id/__statics/gudangsoal/files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://elearning.mtsalkhairiyahkpbahari.sch.id/__statics/gudangsoal/files/codes-to-get-free-robux_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_off00003572.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3572 22332 bytes
SHA-256: e20f4e0677b6f072de64c778231d3a06252ff2a3a86b3945e70fa3e5d7ca025f
font_01_sfnt_off00006712.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6712 18984 bytes
SHA-256: 8f7f7d5cf2de43eb6e8e879c9f9a169600b9b4f474cc1f6a18409bcba38a170a

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