Malicious PDF — malware analysis report

Static analysis result for SHA-256 317375a2399856f2…

MALICIOUS

PDF

46.1 KB Created: 2021-05-12 07:15:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 68ec10b92a593dc3ae47009ed9762c97 SHA-1: 5e5fe519e03874a1cf001921f8f66658933448ae SHA-256: 317375a2399856f227161a195a9abcf1e19e702c5b24a8f694458a7e7a8902b2
102 Risk Score

Malware Insights

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

The PDF document contains numerous links to external websites, many of which are designed to appear as download pages for game hacks and cheats. The presence of a "download button" lure and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content. The document's primary function appears to be a link farm for distributing unwanted software.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

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 https://netcdn.xyz/app/406889139/download-coin-master-hack-apk-game-hack PDF link annotation
    • https://pustaka.stie-pembangunan.ac.id/repository/minecraft-hack-mod_GM479516143.pdfIn PDF document text
    • https://pustaka.stie-pembangunan.ac.id/repository/what-do-points-do-in-roblox_GM431946152.pdfIn PDF document text
    • https://pustaka.stie-pembangunan.ac.id/repository/minecraft-free-download-ios_GM479516143.pdfIn PDF document text
    • https://pustaka.stie-pembangunan.ac.id/repository/robux-free-2021_GM431946152.pdfIn PDF document text
    • https://pustaka.stie-pembangunan.ac.id/repository/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://pustaka.stie-pembangunan.ac.id/repository/minecraft-pe-017-0-apk-free-download-android_GM479516143.pdfIn PDF document text
    • https://pustaka.stie-pembangunan.ac.id/repository/do-you-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • https://pustaka.stie-pembangunan.ac.id/repository/hack-to-protect-village-on-coin-master_GM406889139.pdfIn PDF document text
    • https://pustaka.stie-pembangunan.ac.id/repository/coin-master-game-free-download-for-pc_GM406889139.pdfIn PDF document text
    • https://pustaka.stie-pembangunan.ac.id/repository/get-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • https://pustaka.stie-pembangunan.ac.id/repository/make-robux_GM431946152.pdfIn PDF document text
    • https://pustaka.stie-pembangunan.ac.id/repository/free-roblox-accounts-dantdm_GM431946152.pdfIn PDF document text
    • https://pustaka.stie-pembangunan.ac.id/repository/free-robux-thumbnail_GM431946152.pdfIn PDF document text
    • https://pustaka.stie-pembangunan.ac.id/repository/www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
    • https://pustaka.stie-pembangunan.ac.id/repository/can-you-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • https://pustaka.stie-pembangunan.ac.id/repository/coin-master-free-spins-and-coins-app-download_GM406889139.pdfIn PDF document text
    • https://pustaka.stie-pembangunan.ac.id/repository/apps-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://pustaka.stie-pembangunan.ac.id/repository/coin-master-daily-spin-link-app_GM406889139.pdfIn PDF document text
    • https://pustaka.stie-pembangunan.ac.id/repository/free-robux-with-no-human-verification_GM431946152.pdfIn PDF document text
    • https://pustaka.stie-pembangunan.ac.id/repository/coin-master-apk-hack-mod-download_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000487c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x487C 30688 bytes
SHA-256: ee1b0b6746232ce9b62b494f873df1b4923a2d4b81db7ccb33f99cb7cfdb1047
font_01_sfnt_off00008714.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8714 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off000090fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90FE 18472 bytes
SHA-256: b18cc985ac6e8dfcc93ac62d071ee2f888ffbfea1324d1d3cb097b8431324b0a

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