Malicious PDF — malware analysis report

Static analysis result for SHA-256 342343be555fb50e…

MALICIOUS

PDF

34.4 KB Created: 2021-06-29 08:56:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 5711b678112c5465a1d055b3afa2047c SHA-1: d80498cf14358d9d29e633a46a9440ca50420aac SHA-256: 342343be555fb50e3a1ec0f22ef8f0bbb4ea36b5e0412ed1b43666d7fe15280a
82 Risk Score

Malware Insights

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

The PDF contains embedded URLs and document body text that mimic a download lure, specifically related to game cheats. The presence of heuristics for a download button and password archive instructions strongly suggests a social engineering attempt to trick the user into downloading a secondary payload. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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-cheat-on-roblox-guess-character-game-hack PDF link annotation
    • http://library.apsidoarjo.ac.id/repository/coin-master-hack-apk-no-survey_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/toolbox-premium-apk_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/best-free-robux-sites_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/roblox-code-on-how-to-get-clothes-for-free_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-clothes-giveaway-online-roblox_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/roblox-hack-with-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-minecraft-hosting-24-7_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/best-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/star-code-roblox-free_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/roblox-hack-account-and-password_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/roblox-champion-free-shirt_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-roblox-clothes-website_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/coin-master-hack-apk-download-2021_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/hacks-to-get-robux-in-tower-of-hell_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/adopt-me-hack-roblox-money_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/earn-roblox_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-roblox-code-generator-no-survey_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/coin-master-free-spins-link-no-verification_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/bloxland-free-robux-codes_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
font_00_sfnt_off0000307f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x307F 21968 bytes
SHA-256: 8a41696d9f449b8317df6c06a0e905e8d5e68c404e17fc41f55bedc36621c782
font_01_sfnt_off0000611e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x611E 19060 bytes
SHA-256: 92082ae570d85f6f441673802dc3f579eea8c9a7bcec3df115f6d3f60d349da5

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