Malicious PDF — malware analysis report

Static analysis result for SHA-256 3eb1e10066907138…

MALICIOUS

PDF

35.4 KB Created: 2021-07-05 12:52:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 23ae2e736ef504d71399074d2f7cd57b SHA-1: 17062573dd62eea1885ea921a1ad440b781b7aca SHA-256: 3eb1e100669071388528a69e4e1f5ee391a6c69920ae65671d88fc9b4a43242d
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.tw/app/431946152/free-robux-no-verification-or-survey-game-hack PDF link annotation
    • http://psikologi.unair.ac.id/digilib/repository/how-to-hack-roblox-with-lucky-patcher_GM431946152.pdfIn PDF document text
    • http://psikologi.unair.ac.id/digilib/repository/roblox-le-bote-level-cheat_GM431946152.pdfIn PDF document text
    • http://psikologi.unair.ac.id/digilib/repository/how-to-get-free-unlimited-robux-in-roblox-youtube_GM431946152.pdfIn PDF document text
    • http://psikologi.unair.ac.id/digilib/repository/roblox-exploit-hack-october-2021_GM431946152.pdfIn PDF document text
    • http://psikologi.unair.ac.id/digilib/repository/get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://psikologi.unair.ac.id/digilib/repository/free-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://psikologi.unair.ac.id/digilib/repository/free-roblox-hack_GM431946152.pdfIn PDF document text
    • http://psikologi.unair.ac.id/digilib/repository/free-robux-available_GM431946152.pdfIn PDF document text
    • http://psikologi.unair.ac.id/digilib/repository/roblox-free-minigames_GM431946152.pdfIn PDF document text
    • http://psikologi.unair.ac.id/digilib/repository/roblox-fly-hack-mobile_GM431946152.pdfIn PDF document text
    • http://psikologi.unair.ac.id/digilib/repository/roblox-booga-booga-hack-download_GM431946152.pdfIn PDF document text
    • http://psikologi.unair.ac.id/digilib/repository/delta-roblox-hack-buy_GM431946152.pdfIn PDF document text
    • http://psikologi.unair.ac.id/digilib/repository/ccv3-roblox-jailbreak-speed-hack_GM431946152.pdfIn PDF document text
    • http://psikologi.unair.ac.id/digilib/repository/roblox-trolling-hack_GM431946152.pdfIn PDF document text
    • http://psikologi.unair.ac.id/digilib/repository/stigma-roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://psikologi.unair.ac.id/digilib/repository/hack-roblox-admin-ban-lua_GM431946152.pdfIn PDF document text
    • http://psikologi.unair.ac.id/digilib/repository/free-items-on-roblox-2021-catalog_GM431946152.pdfIn PDF document text
    • http://psikologi.unair.ac.id/digilib/repository/inspect-element-roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://psikologi.unair.ac.id/digilib/repository/hack-dragon-ball-rage-roblox-mobil_GM431946152.pdfIn PDF document text
    • http://psikologi.unair.ac.id/digilib/repository/where-to-get-free-robux_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_off00003216.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3216 22572 bytes
SHA-256: f1a128e4260c5d1f7eface31c820bfecaea3b78a520bb89f28c26fe024e0f585
font_01_sfnt_off00006449.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6449 19368 bytes
SHA-256: 551afc8435a3263a9a14f68c6fac56cdd03dabd4713ff120a4b3cc718d9f39ef

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