Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5b66e7008e0f7ee…

MALICIOUS

PDF

35.2 KB Created: 2021-06-29 08:24:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 3f13d044f3c70e5867d7e750b8766c08 SHA-1: a23eca836c852f9278ef5f568978a91c5f4a60e3 SHA-256: d5b66e7008e0f7eef3c251984a96b22f8573fd1d4e731c8f4387aeb2f4eee660
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external websites, many of which are structured as SEO-optimized PDF links, suggesting a link farm or scam operation. The document body and extracted URLs explicitly mention 'free shirts on Roblox', 'free robux', and 'coin master hack', indicating a lure for users seeking cheats or exploits. The presence of a 'download button' heuristic further supports the malicious intent of directing users to potentially harmful content.

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-free-shirts-on-roblox-2021-game-hack PDF link annotation
    • http://pustaka.fti.unand.ac.id//repository/free-links-for-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/stickmasterluke-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/how-to-get-actual-free-robux-by-doing-nothing_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id//repository/free-tiktok-followers-quick_GM835599320.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/how-to-hack-coin-master-using-es-file_GM406889139.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/robux-hack-without-installing-apps_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/free-robux-no-survey-or-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/infinite-yield-hack-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/free-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/roblox-booga-booga-mojo-hack-wearedevs_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/how-to-hack-on-hilton-hotels-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id//repository/appsmob-info-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/this-code-gives-you-1-billion-free-robux-instantly_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id//repository/free-spins-coin-master-daily_GM406889139.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/robux-fun-com-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/hack-roblox-accounts-passwords_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/how-to-run-fast-in-roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/coin-master-hack-apk-2021-ios_GM406889139.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/how-to-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id//repository/coin-master-daily-free-cards_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_off00003126.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3126 22560 bytes
SHA-256: 11c739608d827c20f1ac146af7c4191d2fe2cdc60a4200686d4b41dd1cf0d877
font_01_sfnt_off000062f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62F1 19604 bytes
SHA-256: 1b52e0ae3b55763504476f679e573dd81d978945595afc28a7313ed2956d934a

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