Malicious PDF — malware analysis report

Static analysis result for SHA-256 65090072221be7d4…

MALICIOUS

PDF

33.5 KB Created: 2021-07-05 13:41:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 327718be84af5fce7ce88accd3f2de14 SHA-1: 5f3d336c1be2826a268a44e1bf5685c97e3151a4 SHA-256: 65090072221be7d401a8d8e0e780775a26fa6b4f0d625b74cef1b059ab54a80f
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded links, identified as a link farm, that direct users to websites promising free items for games. The ML classifier strongly flagged this PDF as malicious, and the presence of many external URIs suggests a phishing or scam attempt. No scripts were extracted, but the document's structure and content indicate it's designed to trick users into visiting potentially harmful sites.

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.tw/app/479516143/free-minecraft-printables-food-labels-game-hack PDF link annotation
    • http://lib.fekon.untad.ac.id/repository/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/robux-free-gift-card_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-cash-script-ultimate-driving-roblox-pastebin_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/coin-master-free-spins-hack-but-no-surveys_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/android-robux-hack-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-days-dino-sim-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-robuxcom-real_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/download-cheat-roblox-pc_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/how-to-use-wifi-roblox-hack_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/how-to-get-free-robux-no-download-no-survey-2021_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-minecraft-java-server_GM479516143.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/hack-para-jailbreak-roblox-pc_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/whats-a-code-for-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/coin-master-unlimited-spin-hack-apk_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-roblox-accounts-with-passwords-2021_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/roblox-exploits-2021-free_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-robux-june_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_off00002edb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EDB 21948 bytes
SHA-256: 77954a83ac3db893e3dca1657155b92acea85b704238a4f96427086b593e7ab2
font_01_sfnt_off00005f3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F3D 18556 bytes
SHA-256: 305b0bb95dea39cc310aaf798f5aa91dcc06275b2e7d604a8dcca2c7ef54f050

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