Malicious PDF — malware analysis report

Static analysis result for SHA-256 910261c66cc38266…

MALICIOUS

PDF

40.7 KB Created: 2021-04-30 19:49:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 38f484935d8a1f661eb42669c338c2c5 SHA-1: 56e737c9be1cb31140234274a1d73189cbbb06c9 SHA-256: 910261c66cc38266096e262a24b12271533478bdd5d29d0de2f37c1d497647c0
82 Risk Score

Malware Insights

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

The document uses a lure related to obtaining free Robux, a common tactic for distributing malware. The heuristic 'SE_BROWSER_INSTALL_LURE' indicates the document likely prompts the user to install a browser extension or update, which is a known social-engineering path for malware. The embedded URL points to a resource that likely serves a malicious payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9941

Heuristics 4

  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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 https://netcdn.xyz/app/431946152/how-to-get-codes-free-for-robux-game-hack PDF link annotation
    • https://fridaytravelnepal.com/userfiles/files/roblox-saiyan-simulator-hack.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/bleus-free-robux.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/cheat-in-roblox-jailbreak-money.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/diamond-roblox-hack-jailbreak.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/roblox-free-hack-download.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/comment-faire-cheater-sur-roblox.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/invisible-hack-roblox-jailbreak.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-robux-code-on-roblox.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/01-know-this-free-robux-secret.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/roblox-how-to-get-builders-club-for-free.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
stream_003_off00004074.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4074 26168 bytes
SHA-256: 21ebd1f61ee2a428f01efbe5e550dca5c5f46a87c171ae91553d1312626d3c9e
font_01_sfnt_off00007ce2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CE2 18456 bytes
SHA-256: 38ad0bc84df7a6409be83dd922ad83fd31ec17904dd5a71f8561b4d802f5825a

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