Malicious PDF — malware analysis report

Static analysis result for SHA-256 d64bd8a20d8cd27c…

MALICIOUS

PDF

35.0 KB Created: 2021-07-01 06:58:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 88acd962ebce59b1d56cf3df104912d4 SHA-1: e343dc0569a8f88ebac785d8e1e6bc307872fe54 SHA-256: d64bd8a20d8cd27c8e5f735e1725295ee2c70b207636ff7d6dee8a2e53b3b826
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/free-robux-android-fast-game-hack PDF link annotation
    • http://digilib.akbidarrahma.ac.id/repository/download-free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/roblox-making-hacker-smilator_GM431946152.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/hacked-project-pokemon-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/roblox-pink-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/minecraft-bedrock-edition-pc-download-free_GM479516143.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/roblox-scripts-cheats-2021_GM431946152.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/strucid-aimbot_GM431946152.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/roblox-build-a-boat-hack_GM431946152.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/roblox-jailbreak-hack-script-2021_GM431946152.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/roblox-fly-hacks-download_GM431946152.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/hacks-para-roblox-dragon-ball-rage_GM431946152.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/hacks-para-roblox-descargar-2021_GM431946152.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/roblox-ce-cheat-tables_GM431946152.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/mcpe-master-hack-unlimited-coins-apk_GM406889139.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/minecraft-windows-10-edition-free-download_GM479516143.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/hacks-roblox-2021_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_off000031f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31F0 22412 bytes
SHA-256: 8b78863dde4ef3a4f848e3274cdd0603e4127deb88798732ade8788eecbb740b
font_01_sfnt_off000063a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63A9 19112 bytes
SHA-256: f7b609f41342902957328a69fe159b237ad56bc1aa298e8db04e800a51211aa8

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