Malicious PDF — malware analysis report

Static analysis result for SHA-256 59794f58d51fb191…

MALICIOUS

PDF

34.8 KB Created: 2021-06-26 10:24:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: cca171eeaea151336213a05caf2462e5 SHA-1: 69d914a4dedffab8498cfe50ec5ac8835ee7f7da SHA-256: 59794f58d51fb191c627120885982d83e497c92c017c2aa8d83f5f31f86e99cb
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of external links, many of which are SEO-optimized and point to sites offering 'free Robux' or game hacks. The ML classifier strongly flagged this PDF as malicious, and the presence of numerous links suggests a link farm designed to redirect users to potentially malicious websites. The document body itself contains a title related to hacking Roblox and includes several of these suspicious URLs.

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-hack-roblox-robux-on-pc-game-hack PDF link annotation
    • http://livsgnistans.se/images/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://livsgnistans.se/images/how-to-hack-phantom-forces-2021-roblox-without-downloading-anything_GM431946152.pdfIn PDF document text
    • http://livsgnistans.se/images/free-coin-and-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://livsgnistans.se/images/minecraft-fly-hack_GM479516143.pdfIn PDF document text
    • http://livsgnistans.se/images/free-lil-pump-jacket-roblox_GM431946152.pdfIn PDF document text
    • http://livsgnistans.se/images/wierd-roblox-items-for-free_GM431946152.pdfIn PDF document text
    • http://livsgnistans.se/images/free-realistic-minecraft-texture-packs_GM479516143.pdfIn PDF document text
    • http://livsgnistans.se/images/hacker-for-roblox-https-meganz-nfpdms5k-q8b-1b9y_GM431946152.pdfIn PDF document text
    • http://livsgnistans.se/images/free-games-like-roblox_GM431946152.pdfIn PDF document text
    • http://livsgnistans.se/images/hack-to-protect-village-on-coin-master_GM406889139.pdfIn PDF document text
    • http://livsgnistans.se/images/robux-gives-mega-glitch-hack_GM431946152.pdfIn PDF document text
    • http://livsgnistans.se/images/free-gamepass-in-any-games-roblox_GM431946152.pdfIn PDF document text
    • http://livsgnistans.se/images/free-spins-coin-master-links-blogspot_GM406889139.pdfIn PDF document text
    • http://livsgnistans.se/images/free-minecraft-gift-codes_GM479516143.pdfIn PDF document text
    • http://livsgnistans.se/images/free-annual-robux_GM431946152.pdfIn PDF document text
    • http://livsgnistans.se/images/how-to-win-robux_GM431946152.pdfIn PDF document text
    • http://livsgnistans.se/images/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
    • http://livsgnistans.se/images/free-robux-generator-for-kids_GM431946152.pdfIn PDF document text
    • http://livsgnistans.se/images/how-to-hack-coins-in-mcpe-master_GM406889139.pdfIn PDF document text
    • http://livsgnistans.se/images/pokemon-go-free-online_GM1094591345.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_off0000310e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x310E 22360 bytes
SHA-256: b8a78fd73fa2fb6b901ea0df76ce81bb6d4a323ec36bb5ff890c6fb1f2ef51ba
font_01_sfnt_off000062b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62B3 19112 bytes
SHA-256: 59706db8f718c6cbb4ffacb4297159e1fb9aa0560b6d6ec059df1261f81fc9a7

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