Malicious PDF — malware analysis report

Static analysis result for SHA-256 9648cf8bb55b4e6a…

MALICIOUS

PDF

35.6 KB Created: 2021-06-28 14:52:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 149dbdc5249ad5b8795c4881b33abe8e SHA-1: d9cf9b389110c0b46d781a4a0079cb0f55f62016 SHA-256: 9648cf8bb55b4e6ae55ccc5a67e5611540dbaa6dc2703b76d8485c750126c785
82 Risk Score

Malware Insights

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

This PDF document contains embedded URLs and a call-to-action lure related to obtaining free items for games, suggesting a social engineering attempt to trick users into downloading malware. The ML classifier strongly flagged this PDF as malicious, and the presence of multiple game-related lures indicates a likely attempt to distribute a second-stage payload via the embedded links.

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/free-things-in-catalog-roblox-game-hack PDF link annotation
    • http://library.feb.unila.ac.id/rfeb/repository/how-to-get-free-robux-2021-easy-step-by-step_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb//repository/tiktok-followers-free-2021_GM835599320.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/free-cute-outfits-on-royale-high-roblox_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/roblox-snow-shoveling-simulator-free-santa_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/19-diamond-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/roblox-cheat-codes-for-tix_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb//repository/daily-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/free-star-codes-roblox_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/pubg-90-uc_GM1330123889.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb//repository/free-robux-just-enter-username-and-password_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/coin-master-daily-spins_GM406889139.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb//repository/free-links-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/coin-master-connection-lost-hack_GM406889139.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/how-to-get-robux-for-free-working-2021_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/coin-master-free-spin-trick_GM406889139.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/coin-master-free-gifts_GM406889139.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/roblox-events-2021-robux-free_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb//repository/coin-master-free-rewards-link_GM406889139.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/coin-master_GM406889139.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/archery-master-3d-hack-unlimited-coins-cheats_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
font_00_sfnt_off000033b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33B1 22644 bytes
SHA-256: 0ff8e4f23452b35385088431ebd55113b6084093986874dab2cd9d5a209daec9
font_01_sfnt_off00006640.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6640 19040 bytes
SHA-256: a6ea010c4ed4a8724d0ddd3813016048dff00a39ecc80092a9bc2084fde35194

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