Malicious PDF — malware analysis report

Static analysis result for SHA-256 947dff5d2de364d0…

MALICIOUS

PDF

34.6 KB Created: 2021-06-30 04:47:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 53bff1cc512951ff3c2b22df09b69c89 SHA-1: 737a094d94537fb923f9752d94c689cfec80fb74 SHA-256: 947dff5d2de364d0fc72ac574491f4aa218795640a8311864090b9707f0191db
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The document contains multiple embedded URLs and a prominent external URI pointing to sites offering game hacks and currency, suggesting a lure for downloading malware. The heuristic for a password-protected archive handoff indicates that the downloaded content may be encrypted to bypass initial security checks. No scripts were extracted from this sample, but the overall pattern strongly suggests a downloader or trojan.

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/more-robux-for-free-game-hack PDF link annotation
    • http://library.fk.upnvj.ac.id/repository/cheat-roblox-abeille_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/jailbreak-script_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/where-can-i-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/earn-robux-today_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/coin-master-daily-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/cheats-roblox-mine-simulator-julio-2021_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/contrasenas-de-cuentas-de-roblox-free_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/how-to-hack-roblox-prison-life_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/roblox-hack-client-deutsch_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/how-to-get-free-robux-easy-on-chromebook_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-roblox-executor_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/how-to-become-a-hacker-in-roblox_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/best-roblox-hack-scripts_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-roblox-roblox-games_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/how-to-you-hack-on-roblox-assassin-2021_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/veichle-simulator-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/op-rewards-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/roblox-fly-hack_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000303c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x303C 22672 bytes
SHA-256: b734a72cd36cb1fa92c73063b2adc6f0f07f17469a4e9362b5e7b36b6bdd00c1
font_01_sfnt_off000062b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62B6 18912 bytes
SHA-256: a63641a7408145d819bfe5027da50f971d60d2b1b81d1824f900a2b3ebaff357

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