Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb9e2e3ad84a880f…

MALICIOUS

PDF

34.4 KB Created: 2021-06-26 05:34:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 15c212000151845f7b6d12124805297a SHA-1: a7024c7d61370adf3362368cce9f20ade7beae3e SHA-256: eb9e2e3ad84a880fa785e223d87c5f7a36494aa06a7957b01d8ab2d47f7e4dbd
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded links and a document body that promises information on hacking and free in-game currency, indicative of a phishing or scam lure. The ML classifier and PDF link farm heuristics strongly suggest malicious intent. No scripts were extracted, but the embedded URLs are the primary indicators of compromise, likely leading to further malicious content or downloads.

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-hack-roblox-murder-game-hack PDF link annotation
    • http://library.ulb.ac.id/repository/coin-master-heaven-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/guess-the-logo-cheat-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-robux-without-email_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/comment-hacker-jailbreak-roblox_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/roblox-microsoft-rewards_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-robux-generator-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/how-to-hack-roblox-dragon-ball-rage_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/coin-master-free-spins-facebook_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/how-to-get-free-robux-on-laptop-easy-2021_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/blogspot-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/coin-master-free-pet-food-links_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/scaffold-minecraft-hack_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/how-to-hack-a-roblox-account-2021_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/minecraft-free-download-mac_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/roblox-icon-download-free_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-robux-no-inspect-or-waiting_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/best-free-roblox-executor_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/how-to-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/best-site-for-free-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/gamekit-how-to-get-800-robux-for-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_off0000306d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x306D 21856 bytes
SHA-256: c545535609135a2e75a15212fdad75e0f2ca25a5f73a75585c2703465c5729e5
font_01_sfnt_off00006099.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6099 19332 bytes
SHA-256: 2fca3cd2dbd69141fab2b4d342479c481fd321f9352c1e46ef1af1c5b322034b

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