Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d35e603d46ae1d3…

MALICIOUS

PDF

35.4 KB Created: 2021-06-28 10:35:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: eacb574531113d61a7ad120d3d0b5396 SHA-1: d11ec6c970aa5454faa0ea7e40422a67676d93e8 SHA-256: 9d35e603d46ae1d35674ba4b68c3f913281d2de230ef04312bbf6b7219249a02
102 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to game exploits and hacks for popular games like Roblox and Minecraft. The primary URL, http://netcdn.co/app/431946152/free-roblox-executor-no-crash-good-api-no-key-game-hack, suggests a lure for downloading an executor tool. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external links, reinforcing 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/free-roblox-executor-no-crash-good-api-no-key-game-hack PDF link annotation
    • http://opac.akafarma-aceh.ac.id/repository/how-to-play-minecraft-online-for-free_GM479516143.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/roblox-i-cheated-for-this-axe_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/coin-master-unlimited-coins-hack-apk-download_GM406889139.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/robux-cheaten-in-roblox_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/cheat-mad-city-roblox_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/get-free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/how-to-start-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/crazy-robux-hack_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/cool-hacker-names-for-roblox_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/coin-master-free-spin-ml_GM406889139.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/how-do-you-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/how-to-hack-peoples-account-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/coin-master-free-spin-link-today-50_GM406889139.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/coin-master-20-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/roblox-free-robux-website_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/view-noclip-hack-roblox_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/extension-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/hack-speed-roblox_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/photostar-hack-client-inject-error-roblox_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_off000030d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30D0 22636 bytes
SHA-256: 75f685dd239ea0ddb1db57a4487057185370eaf1bad32538ff8d96f31b4f770e
font_01_sfnt_off00006349.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6349 19708 bytes
SHA-256: 637c171668a44de063cf120f5290970c057c4b2be1ce7b8732d13fbddc1f3541

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