Malicious PDF — malware analysis report

Static analysis result for SHA-256 4632f6304b8bf87a…

MALICIOUS

PDF

33.6 KB Created: 2021-06-30 17:00:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 34ea0a4d55e066b18b42a6fbacc9a138 SHA-1: a7c28890bcb2ab72ea89cf467bf86dae73f0a8cc SHA-256: 4632f6304b8bf87a95363b1b00e288ce226131a96b85bb78ebe9284411325348
102 Risk Score

Malware Insights

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

The PDF contains numerous links to external websites, many of which are SEO-optimized and appear to be part of a link farm designed to attract users searching for game cheats and hacks. The ML classifier strongly indicated maliciousness, and the presence of a download button lure reinforces the deceptive nature of the document. The primary goal appears to be directing users to download potentially harmful files or visit malicious sites.

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/dev-hack-roblox-game-hack PDF link annotation
    • http://perpus.masda.ac.id//repository/coin-master-free-spins-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-hack-apk-facebook-login_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/how-to-become-a-hacker-in-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/ben-10-cheat-codes-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/how-to-get-free-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-coin-master-spin-generator_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/how-to-get-free-robux-in-2021_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/coin-master-daily-link_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/roblox-robux-hack-2021-no-survey-no-password_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-robux-generator-no-human-verification-no-survey-or-offers_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/hacked-account-via-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/free-minecraft-skins-pe_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/how-can-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/roblox-cc-hacks_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/coin-master-gold-cards-hack-english_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-game-packs-for-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-appsfor-coin-master-daily-rewards_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/is-minecraft-earth-free_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/how-to-get-free-robux-no-survey-no-download_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_off00002d2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D2F 22304 bytes
SHA-256: ff3887e6e1ec6bf3f488709d6501fcb0f03856bbde98983880301193187f319c
font_01_sfnt_off00005e4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E4E 18940 bytes
SHA-256: c36eddedd9323c258aab2114c9b51e76f52d397868891115394a117d2681b3ab

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