Malicious PDF — malware analysis report

Static analysis result for SHA-256 984c1cecd6da067f…

MALICIOUS

PDF

42.8 KB Created: 2021-06-03 06:32:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 9140f759da8a64fcb56c64e05a5ff657 SHA-1: 6d120817b2969f2f1a414c1a28719d579e5b85bd SHA-256: 984c1cecd6da067fc59eb1ff74dbffd9c80e330d06763e06454eeae5dc43ce04
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains heuristics indicating it is malicious and attempts to lure the user into installing a browser extension or update. The document body and embedded URLs suggest a social engineering tactic, likely to trick users into downloading a payload or providing credentials. No scripts were extracted, but the presence of external URLs indicates a potential download or redirection to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9874

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.online/app/835599320/is-tiktok-free-on-ipad-game-hack PDF link annotation
    • http://www.mondecasa.com/Public/upload/editorfiles/master-coin-master-free-spin_GM406889139.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/coin-master_GM406889139.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/free-minecraft-server-hosting-with-plugins_GM479516143.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/free-robux-codes-2021-not-used_GM431946152.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/roblox-install-free_GM431946152.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/play-roblox-for-free-on-google_GM431946152.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/roblox-promo-codes-2021-robux_GM431946152.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/get-free-robux-info_GM431946152.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/coinmaster-blogspot_GM406889139.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/how-to-get-minecraft-pocket-edition-for-free_GM479516143.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/www-robux-redeem_GM431946152.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/how-to-get-free-coins-in-minecraft_GM479516143.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/how-to-get-free-robux-without-download-apps-or-survey_GM431946152.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/robuxmatch-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/free-roblox-accounts-with-builders-club_GM431946152.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/roblox-gang_GM431946152.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/coin-master-free-spins-and-coins-daily_GM406889139.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/how-to-get-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/roblox-imagine_GM431946152.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_004_off00004e08.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E08 24128 bytes
SHA-256: d2e2cac827a1832387ed41a2647eecd382d75fe01b3bb65a652aa2ecc4ad5e63
font_01_sfnt_off00008566.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8566 18036 bytes
SHA-256: 8347bb26055910304e4b5aa0c1166454432982af0c4bbaf80b126e13b102b041

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