Malicious PDF — malware analysis report

Static analysis result for SHA-256 bfbdad89e2896c6b…

MALICIOUS

PDF

45.2 KB Created: 2021-06-03 11:45:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 10a3bb4d468a1c51ac6afbcc44edaa4b SHA-1: 95fc0da1fc6181020d8e64705fbeb20f5754a377 SHA-256: bfbdad89e2896c6b2359e940bbd2c131e2c5e53ff4307fc6e11e2896de13c610
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high number of embedded links, many of which are SEO-style links pointing to game-related cheats and hacks, suggesting a lure for users to download malicious content. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs further supports this assessment. While no scripts were explicitly extracted, the document's structure and embedded links indicate an attempt to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.online/app/431946152/earnrobux-game-hack PDF link annotation
    • http://library.persadabunda.ac.id/repository/free-to-play-minecraft-servers_GM479516143.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/how-to-get-spins-for-free-on-coin-master_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/coin-master-free-spin-today_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/coin-master-hack-using-cheat-engine_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/earn-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/coin-master-hack-apk-with-fb-login-2021_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/coin-master-links-2021_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/can-you-really-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/roblox-promo-codes-free-robux_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/how-to-get-free-robux-without-downloading-any-apps_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/earn-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/roblox-army-free-robux_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/coin-master-link-spin_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/free-spin-coin-master-twitter_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/minecraft-hacked-client-download_GM479516143.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/spin-free-coin-master_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/easy-ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/coin-master-free-spins-2021_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005049.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5049 27008 bytes
SHA-256: 28092d3d0b4869fbd57778fa93bcee54b1489247d7693e8a746c1c96113cc4a1
font_01_sfnt_off00008e9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E9E 18076 bytes
SHA-256: 2721194a66b32dfdaea4e26ed0bd84b304de41eeda81871a4ffc347c5a8adb25

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