Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8b8da8f64a99422…

MALICIOUS

PDF

35.0 KB Created: 2021-06-25 17:23:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: f7f7a6f2355a493b4bf1ea4574346cee SHA-1: 09c928270894aa7e6df4a4f311624f5da1c69c57 SHA-256: b8b8da8f64a9942203cd8200430c50656eab63bfb78c11f139461c54de305c44
82 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs and a call-to-action phrase, strongly suggesting a lure to download malicious content. The ML classifier also flagged this PDF as malicious with high confidence. The document's content and embedded links point towards a scam related to in-game currency and hacks for popular games.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/free-roblox-explot-game-hack PDF link annotation
    • http://www.elibrary.perludem.org/repository/coin-master-spin-link-hack_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/free-roblox-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/how-to-get-750-000-robux-for-free_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/coin-master-hack-apk_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/roblox-robux-page_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/how-to-get-free-food-for-foxy-in-coin-master_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/free-robux-websites-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/coin-master-hack-tool-no-human-verification_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/free-roblox-accounts-generator-with-robux_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/hack-de-cuentas-roblox_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/minecraft-hack-app_GM479516143.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/pokeballs-pokemon-go-free_GM1094591345.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/pubg-uc-whatsapp-group_GM1330123889.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/reddit-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-robux-just-enter-username-and-password_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/roblox-games-free_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/pubg-uc-20210_GM1330123889.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/cheats-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/free-robux-come_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/coin-and-spin-link_GM406889139.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_off00003030.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3030 23136 bytes
SHA-256: d4534b1fbc604012818b7516310dd8a0b80cb13d0f8b750b67ec877b4942bebf
font_01_sfnt_off00006405.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6405 18932 bytes
SHA-256: 4cb401a3ccdf658b16d35d6b9d41628071acacdf901c26f6f0bc27e7d7d9be80

Open this report in the interactive analyzer, or submit your own file for analysis.