Malicious PDF — malware analysis report

Static analysis result for SHA-256 895b9fdc15a450aa…

MALICIOUS

PDF

41.6 KB Created: 2021-04-04 02:37:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 21400ff1025c16ca98707d7ed8537a02 SHA-1: e4cf56f258a26fe3d856374c0ef96861e945be60 SHA-256: 895b9fdc15a450aa8f5712ab8cec6d0b6a9b96d06e3fc9d2869cf6b9494c14ea
132 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a large number of embedded links and a document body that repeatedly directs users to websites promising free Robux or hacks for the game Roblox. This indicates a scam or phishing attempt designed to lure users to potentially malicious sites. The heuristic firings confirm the presence of a link farm and external URIs, strongly suggesting a malicious intent to redirect users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9500

Heuristics 5

  • PDF carries distributed game-hack scam link farm critical PDF_GAME_HACK_SEO_LINK_FARM
    PDF contains a free-generator/game-hack lure together with many external PDF links spread across distinct hosts whose filenames advertise game hacks, cheats, jailbreaks, generators, or free currency. This is a high-confidence scam/SEO-poisoning carrier: the PDF exists to route users into malicious or unwanted download/redirect chains, not to present normal document content.
  • PDF carries game-hack generator link farm medium PDF_GAME_HACK_LINK_FARM
    PDF contains a gaminggenerator.org app lure together with multiple external PDF links whose filenames advertise game hacks, cheats, jailbreaks, or generators. This is a lure/delivery link farm rather than a PDF exploit: the risk is the linked redirection chain.
  • 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://gaminggenerator.org/app/431946152/free-robux-genderator-roblxo-2021-no-downlaod-working PDF link annotation
    • https://www.hbproducts.dk/images/free-robux-no-human-verification-or-survey-2021-easy.pdf%0AIn PDF document text
    • http://portal.crfsp.org.br/images/how-to-hack-roblox-with-inspect-element.pdf%0AIn PDF document text
    • http://sdservicesrl.it/images/roblox-hack-v6-5-free-download.pdf%0AIn PDF document text
    • http://lewishome.net/images/hack-roblox-games-2021.pdf%0AIn PDF document text
    • http://uctovnictvosnv.sk/images/free-shavaco-do-song-code-for-roblox.pdf%0AIn PDF document text
    • http://aeroclub-kaernten.at/images/tre-un-hacker-sur-roblox.pdf%0AIn PDF document text
    • https://www.ghknights.org/images/free-copy-escape-obby-for-roblox-game.pdf%0AIn PDF document text
    • https://www.udivadlahotel.cz/images/free-20210-robux.pdf%0AIn PDF document text
    • https://www.udivadlahotel.cz/images/roblox-epic-mining-2-beta-cheats.pdf%0AIn PDF document text
    • http://www.torvet11.dk/images/how-to-get-free-money-in-roblox-lumber-tycoon-2.pdf%0AIn PDF document text
    • https://www.yewtreealpacas.co.uk/images/roblox-free-promo-codes-2021.pdf%0AIn PDF document text
    • http://nosocomium.rv.ua/images/invisible-blue-hack-roblox.pdf%0AIn PDF document text
    • http://www.mosaikshop.at/images/free-robux-generator-2021.pdf%0AIn PDF document text
    • https://www.yewtreealpacas.co.uk/images/how-to-get-free-robux-august-2021.pdf%0AIn PDF document text
    • http://baah.ca/images/how-to-hack-roblox-passwords.pdf%0AIn PDF document text
    • http://cosver.eu/images/go-thru-walls-roblox-jailbreak-hack.pdf%0AIn PDF document text
    • http://www.marambio.com.ar/images/how-to-get-free-robux-on-roblox-without-doing-anything.pdf%0AIn PDF document text
    • https://www.iadh.bi/images/free-robux-pastebin-promocode.pdf%0AIn PDF document text
    • http://learningarabic.co.uk/images/cheat-roblox-blox-piece.pdf%0AIn PDF document text
    • http://www.hawler.in/images/robux-hack-no-verify.pdf%0AIn PDF document text
    • https://corbo.ru/images/free-surverys-for-robux.pdf%0AIn PDF document text
    • https://jdlgroup.ca/images/download-roblox-for-free-on-android.pdf%0AIn PDF document text
    • https://fkg.usu.ac.id/images/roblox-accounts-for-robux-for-free-geko97.pdf%0AIn PDF document text
    • https://www.dierenartsberghman.be/images/roblox-city-simulator-free.pdf%0AIn PDF document text
    • http://homequeen.de/images/roblox-hack-clients-virus-free.pdf%0AIn PDF document text
    • http://www.eaapiaria.es/images/how-to-hack-speed-in-dash-simulator-on-roblox.pdf%0AIn PDF document text
    • http://hemmet-strand.dk/images/how-to-get-anything-on-roblox-for-free-2021.pdf%0AIn PDF document text
    • http://ivalor.fr/images/https-www-roblox-free-account.pdf%0AIn PDF document text
    • https://sitam.co.in/images/roblox-games-with-free-boombox-2021.pdf%0AIn PDF document text
    • https://www.elevage-chiot.fr/images/roblox-site-17-hacker.pdf%0AIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn extracted file (font_00_sfnt_off0000460f.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000460f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x460F 23700 bytes
SHA-256: 9eae70243787e85e8cb4343a6088bb34d3fc16ea99e270db90bdc27ddef58d92
font_01_sfnt_off00007b90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B90 19500 bytes
SHA-256: 2552bfd2e165cf4d08bc41178c2aeaa579882147ff895c6d14e5d65ecb66b00f