Malicious PDF — malware analysis report

Static analysis result for SHA-256 b540a63e46652031…

MALICIOUS

PDF

35.1 KB Created: 2021-06-29 10:25:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 3a0ff93ff2f23fc4393a01a6b5e37dfb SHA-1: 20d3a4e37ddabadc09c11c5b9d452bc6edde839a SHA-256: b540a63e46652031c43a6fb1b3d499e3bb1e02a20b29eaddf949453b1e509ac0
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • 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/roblox-jailbreak-god-mode-hack-game-hack PDF link annotation
    • http://lib.fekon.untad.ac.id/repository/roblox-hacks-on-mac_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/roblox-pastebin-hack_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/roblox-free-download_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/hack-script-roblox-game-servers_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/rbx-place-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/how-do-i-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/roblox-witch-hat-free_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/wie-hacke-ich-mir-robux_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-script-executor-lvl-7-roblox-5-18_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-robux-instantly_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/darkrp-roblox-hacking-5_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/coin-master-hack-app-2021_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/microsoft-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/robux-hack-script-pastebin-2021_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/how-to-get-free-robux-2021-pastebin-com_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-fire-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/how-to-hack-a-roblox-account-2021-ios_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/roblox-flee-the-facility-hack-dlc_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/robux-adder_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_off00003178.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3178 22388 bytes
SHA-256: af4a4b129dbbdac4a26833c5e0d5c3432901fda2d40b9341436511f51e460b7c
font_01_sfnt_off0000637e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x637E 19312 bytes
SHA-256: 295c4266e92e0c18716e25a36791b5bcb8aa085f439295543b9c31f189222639

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