Malicious PDF — malware analysis report

Static analysis result for SHA-256 75100f8b2b82c53e…

MALICIOUS

PDF

35.7 KB Created: 2021-06-19 12:25:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 6b8621dbfac450e54e58db729ea67f9e SHA-1: b2a47b0b8f16114b28737b96368d94b20b5dfb98 SHA-256: 75100f8b2b82c53ee9f51f7d37264306ad7c615c75bc53e52a43f052fa28443b
102 Risk Score

Malware Insights

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

The PDF contains numerous links to external websites, many of which are structured as SEO-optimized PDF gateways for game-related hacks and cheats. The document body explicitly mentions downloading hacks for Roblox and includes a direct link to a download page, indicating a lure for potentially malicious software. The ML classifier also strongly flagged this PDF as malicious.

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/how-to-download-hacks-in-roblox-high-school-game-hack PDF link annotation
    • http://shapemybrows.id/images/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://shapemybrows.id/images/can-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://shapemybrows.id/images/how-to-cheat-money-on-roblox-retail-tycoon_GM431946152.pdfIn PDF document text
    • http://shapemybrows.id/images/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://shapemybrows.id/images/minecraft-windows-10-edition-free-with-java_GM479516143.pdfIn PDF document text
    • http://shapemybrows.id/images/best-free-robux-sites_GM431946152.pdfIn PDF document text
    • http://shapemybrows.id/images/how-do-you-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://shapemybrows.id/images/how-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://shapemybrows.id/images/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://shapemybrows.id/images/download-roblox-on-laptop-for-free_GM431946152.pdfIn PDF document text
    • http://shapemybrows.id/images/free-roblox-executor-purple-bunny_GM431946152.pdfIn PDF document text
    • http://shapemybrows.id/images/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
    • http://shapemybrows.id/images/wahoo-gaming-co-free-robux_GM431946152.pdfIn PDF document text
    • http://shapemybrows.id/images/how-to-hack-coin-master-apkmody_GM406889139.pdfIn PDF document text
    • http://shapemybrows.id/images/how-to-earn-robux_GM431946152.pdfIn PDF document text
    • http://shapemybrows.id/images/free-roblox-glasses_GM431946152.pdfIn PDF document text
    • http://shapemybrows.id/images/how-do-you-get-free-pet-food-in-coin-master_GM406889139.pdfIn PDF document text
    • http://shapemybrows.id/images/united-gaming-net-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://shapemybrows.id/images/how-to-get-hacks-on-roblox_GM431946152.pdfIn PDF document text
    • http://shapemybrows.id/images/mcpe-master-unlimited-coins-free-download_GM406889139.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_off00003228.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3228 22816 bytes
SHA-256: eb46a1d78398a1f894fb5cd9c642861926d770e7e17e5b5751609ec9fce24167
font_01_sfnt_off0000655a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x655A 19448 bytes
SHA-256: 252da7f1bfa03b7ce4b093ec8cc48911ff2a8229966231abd00dee4236bf4c74

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