Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8c208b478ac6144…

MALICIOUS

PDF

34.4 KB Created: 2021-06-18 01:15:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 69572dbd0e952a93b1751b2e1def354b SHA-1: 8c71ce340b0493af335403109895369de9aea046 SHA-256: e8c208b478ac61441b11c5a0c9399646f5b977d77503de91cc7bb57a511213fd
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document exhibits characteristics of a malicious lure, employing a large number of external links and a visual download button to entice users. The ML classifier strongly flagged this PDF as malicious, and the presence of numerous links to game cheats and hacks suggests a phishing or malware distribution attempt. The primary IOC is the external URL http://netcdn.co/app/431946152/free-robux-downlaod-trackid-sp-006-game-hack, which likely serves as a download source.

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-robux-downlaod-trackid-sp-006-game-hack PDF link annotation
    • http://www.compusiteinc.com/images/john-doe-hacker-roblox-march-18_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/how-to-get-free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/cheats-for-dinosaur-simulator-roblox_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/roblox-a380-free-model_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/cmaster-club-coin-master-hack-tool_GM406889139.pdfIn PDF document text
    • http://www.compusiteinc.com/images/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/free-tiktok-likes-no-human-verification-or-download_GM835599320.pdfIn PDF document text
    • http://www.compusiteinc.com/images/coin-master-daily-free-spins-today_GM406889139.pdfIn PDF document text
    • http://www.compusiteinc.com/images/roblox-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/free-spin-link-for-coin-master-haktuts_GM406889139.pdfIn PDF document text
    • http://www.compusiteinc.com/images/hacked-skybox-roblox_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/complete-offers-for-robux_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/roblox-free-clothes-girl_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://www.compusiteinc.com/images/daily-free-spin-coin-master-link_GM406889139.pdfIn PDF document text
    • http://www.compusiteinc.com/images/i-will-draw-your-roblox-character-for-free_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/coin-master-hack-apk-free-download_GM406889139.pdfIn PDF document text
    • http://www.compusiteinc.com/images/how-to-hack-roblox-copy-any-roblox-game_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/is-minecraft-free-on-xbox_GM479516143.pdfIn PDF document text
    • http://www.compusiteinc.com/images/was-minecraft-ever-free_GM479516143.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_off00002f1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F1D 21576 bytes
SHA-256: ae5a0a1b6a36c516fe66464818f86678efbf92fa3305e33fd463aeef1f1075bd
font_01_sfnt_off00005e73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E73 19948 bytes
SHA-256: 030c31420fb375784ffeee11051ee366d5d2b5ea1e682642f5034f10cbee4de9

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