Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b8f8e048ca1dad3…

MALICIOUS

PDF

36.6 KB Created: 2021-05-21 19:00:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: db4b02325ff5ca942bde84cf9efbf730 SHA-1: 590b222485685b10f5ea7e3f0ae9e6995140aa92 SHA-256: 4b8f8e048ca1dad3187dbdee35d58ff544066871dfa684c4cae5b0f48132d11d
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a lure for a 'free Minecraft Capes' hack, directing users to a malicious URL. It also includes a heuristic for a clipboard command lure, suggesting the user might be prompted to execute commands. The presence of multiple PDF links to game-related hacks indicates a common phishing or scamming tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9616

Heuristics 5

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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/479516143/free-minecraft-capes-no-mods-game-hack PDF link annotation
    • http://www.marvelorlubricants.com/uploaded_files/userfiles/files/tiktok-free-followers-hack_GM835599320.pdfIn PDF document text
    • http://www.marvelorlubricants.com/uploaded_files/userfiles/files/you-promised-my-son-free-robux_GM431946152.pdfIn PDF document text
    • http://www.marvelorlubricants.com/uploaded_files/userfiles/files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://www.marvelorlubricants.com/uploaded_files/userfiles/files/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://www.marvelorlubricants.com/uploaded_files/userfiles/files/blogspot-free-spins-coin-master_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
stream_002_off000034ba.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x34BA 25516 bytes
SHA-256: 0947efc1951df027debfbca471e4bc072d0ebd2734c3278a98e4b3332395df45
font_01_sfnt_off00006e84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E84 18060 bytes
SHA-256: d2580fb4aafe993e5dab330080fdbce20cb4b143aeb227db28560abf8afc6474

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