Malicious PDF — malware analysis report

Static analysis result for SHA-256 d88e0d32686b2b99…

MALICIOUS

PDF

34.9 KB Created: 2021-07-03 23:45:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: cf97a0d80a43ac931742605d38074bd4 SHA-1: a0b3d1cd06656da5b84e95e9be1f9196797d854e SHA-256: d88e0d32686b2b99937d0cec76f8a0e4e53c9ee7cd5e319bfb1951bd2d91610f
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/406889139/coin-master-hack-iosgods-game-hack PDF link annotation
    • http://library.ulb.ac.id/repository/minecraft-hacks-pc_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-synapse-x-roblox_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/ccv3-cheat-engine-roblox_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-roblox-accounts-with-robux-v3rmillion_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/how-to-get-100-robux-for-free_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/roblox-com-free-stuff_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/coin-master-fan-club_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/cheat-on-roblox-ghost_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/robux-gratis_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-robux-promo-code-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/free-robux-generator-codes_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-models-on-roblox-are-giving-viruses_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/how-to-hack-roblox-to-get-to-the-admin-robux_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-roblox-bots-site-v3rmillionnet_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-account-accounts-roblox_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/unpatchable-robux-hack-robuxian-website_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/windows-10-minecraft-free-with-java_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/roblox-doomspire-brickbattle-hack_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/roblox-ios-robux-hack-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
stream_002_off000031d9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x31D9 23136 bytes
SHA-256: 58f5fe929eaf63ca3df2f24e05718275d7f3c7a78813aa4d20abca3641e6a2ce
font_01_sfnt_off000065e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65E9 18180 bytes
SHA-256: 835919d68baf365dee2eb3881849910c3802b6bb08bb8f403bb4b70701c61443

Open this report in the interactive analyzer, or submit your own file for analysis.