Malicious PDF — malware analysis report

Static analysis result for SHA-256 4569ebdd54cc6219…

MALICIOUS

PDF

32.6 KB Created: 2021-06-19 09:47:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: f0badada51d2dd6024102b10a98e2401 SHA-1: 8bc85290d0a0d0577460b1f00ca6d6edcfb6339b SHA-256: 4569ebdd54cc62195bd45731002487b814054eefe67bc38c447378c6248421a3
102 Risk Score

Malware Insights

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

The PDF document contains numerous links to external resources, many of which are SEO-optimized PDFs related to game cheats and hacks. The primary URL, http://netcdn.co/app/431946152/robux-hack-no-generator-game-hack, likely hosts a malicious application. The ML classifier and the PDF link farm heuristic strongly indicate malicious intent, aiming to trick users into downloading potentially harmful software.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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/robux-hack-no-generator-game-hack PDF link annotation
    • https://www.romedia.gr/images/roblox-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.romedia.gr/images/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
    • https://www.romedia.gr/images/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
    • https://www.romedia.gr/images/coin-master-free-codes_GM406889139.pdfIn PDF document text
    • https://www.romedia.gr/images/how-to-change-your-username-on-roblox-free-2021_GM431946152.pdfIn PDF document text
    • https://www.romedia.gr/images/get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.romedia.gr/images/minecraft-app-free-download_GM479516143.pdfIn PDF document text
    • https://www.romedia.gr/images/get-free-gold-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.romedia.gr/images/how-do-you-earn-free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.romedia.gr/images/free-robux-no-apps-or-surveys_GM431946152.pdfIn PDF document text
    • https://www.romedia.gr/images/robux-boost_GM431946152.pdfIn PDF document text
    • https://www.romedia.gr/images/free-unlimited-robux_GM431946152.pdfIn PDF document text
    • https://www.romedia.gr/images/guest-world-roblox-script-hack_GM431946152.pdfIn PDF document text
    • https://www.romedia.gr/images/free-coins-2021-coin-master-link_GM406889139.pdfIn PDF document text
    • https://www.romedia.gr/images/aimbot-hack-for-roblox-phantom-forces-for-download_GM431946152.pdfIn PDF document text
    • https://www.romedia.gr/images/free-robux-gift-card-codes-2021-december_GM431946152.pdfIn PDF document text
    • https://www.romedia.gr/images/free-robux-only-1-step_GM431946152.pdfIn PDF document text
    • https://www.romedia.gr/images/games-in-roblox-that-give-you-robux_GM431946152.pdfIn PDF document text
    • https://www.romedia.gr/images/free-roblox-sex_GM431946152.pdfIn PDF document text
    • https://www.romedia.gr/images/ways-to-get-free-robux-2021_GM431946152.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_off000028dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x28DC 22500 bytes
SHA-256: 8397a442ac7b105070d38cc22510e030be8bb4b3e38954356c61eea647ca9924
font_01_sfnt_off00005b32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B32 18824 bytes
SHA-256: 6f14fc637b229053ae33284ea1a2f0bb86d503f1d39f395372dafe1832dff6af

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