Malicious PDF — malware analysis report

Static analysis result for SHA-256 29c1911e46df0cf1…

MALICIOUS

PDF

45.1 KB Created: 2021-06-03 13:32:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: d6ef94be3e9cca77933d5926a4cb969b SHA-1: aac7c77fcaf694abe924cc446a6b1c3d7fe693b8 SHA-256: 29c1911e46df0cf14dcbd56d1131ebe8db8e81afd3c7b6cde7a4d157f4c939b6
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which are SEO-optimized to appear as legitimate resources for game cheats and free items. The primary URL points to a resource related to 'roblox-how-to-get-free-stuff-2021-game-hack', indicating a lure for potentially malicious content. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed to redirect users to harmful websites.

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/roblox-how-to-get-free-stuff-2021-game-hack PDF link annotation
    • http://lib.baruna-husada.ac.id//repository/best-site-for-free-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id//repository/how-to-get-free-stuff-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id//repository/free-roblox-hack-us_GM431946152.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id/repository/coin-master-hack-without-human-verification-india_GM406889139.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id/repository/free-robux-generator-for-roblox-2021_GM431946152.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id/repository/coin-master-200-spin-link_GM406889139.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id/repository/hack-game-plus-com-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id/repository/free-spins-for-coin-masters_GM406889139.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id//repository/hack-coin-master-spin-android_GM406889139.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id//repository/free-coins-coin-master-blog_GM406889139.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id/repository/free-robux-android_GM431946152.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id/repository/free-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id//repository/legit-coin-master-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id/repository/free-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id/repository/safe-hack-for-coin-master-android_GM406889139.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id//repository/how-to-get-minecraft-bedrock-for-free_GM479516143.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id/repository/how-to-hack-peoples-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id/repository/how-to-get-800-robux-for-free_GM431946152.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id/repository/free-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id/repository/coin-master-hack-download-android_GM406889139.pdfIn PDF document text
    • https://www.micIn 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_off000050de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x50DE 25396 bytes
SHA-256: fe6d70e70e80542c63c8dec83b04a128190e8a1562410bbf244fb50769b5ebbd
font_01_sfnt_off00008c2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C2E 18756 bytes
SHA-256: 71af28fe3703685ae3a6c996482eb57c643426daf11fab22f8db0b008440d9ac

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