Malicious PDF — malware analysis report

Static analysis result for SHA-256 596fc5d066123265…

MALICIOUS

PDF

35.6 KB Created: 2021-07-01 02:38:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 277d27eefc0f85737f35f2d053a95684 SHA-1: fe730778de9d7ea0f0a797d9acd4b09aee71b1e3 SHA-256: 596fc5d066123265e623e81916f16b8853b9f9f7cd39cda0fecfac792b84023e
82 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1566.001 Spearphishing Attachment

This PDF document exhibits malicious characteristics, including a high ML classifier score and a lure to execute commands via the clipboard. The document body and embedded URLs suggest a theme of obtaining in-game currency or cheats for games like Roblox and Coin Master. The primary attack vector appears to be social engineering, prompting users to interact with malicious links or execute commands that likely lead to the download of further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • 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 http://netcdn.co/app/431946152/how-to-get-easily-promoted-on-roblox-groups-hack-game-hack PDF link annotation
    • http://lib.teknik.unimal.ac.id//repository/robux-free-2021_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/is-ahmad20218-being-hacked-im-roblox_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/coinmasterhack-club_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/free-robux-for-tablet_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/how-to-earn-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/coin-master-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/roblox-hack-apk-latest-version_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/free-draw-roblox-anime_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/how-to-o-get-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/mcpe-master-coins-hack-download_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/bux-gg-robux-free_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/free-roblox-card-codes_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/tiktok-free-view-uk_GM835599320.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/free-robux-edit-html_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/twitter-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/semi-transparent-pants-roblox-free_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/easy-way-to-get-robux_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/i-need-robux_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/free-spins-for-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/free-coin-master-spin-app_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_off00002f4c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2F4C 22956 bytes
SHA-256: f74629adebdad603b7f64fa7a6550fce324084c18eed4f92516b41b302ec24a0
font_01_sfnt_off000062df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62DF 20128 bytes
SHA-256: 57c1794744fddbfb0ba4754dee88686b6c01b662ad2de435106dac82b88776dc

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