Malicious PDF — malware analysis report

Static analysis result for SHA-256 8148beee44d813ee…

MALICIOUS

PDF

41.2 KB Created: 2021-04-04 05:34:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 6e4966a34893152ba606560727719a04 SHA-1: 0b37d8902d82b1dc13ff46f051538e195de1f0b7 SHA-256: 8148beee44d813eeb34e070d5f1eff02c0ed256ef7a8f6d85c7b2fb0d64b9031
132 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains a large number of embedded URLs and text referencing 'Roblox' and 'hacks' or 'free Robux', indicating a scam or phishing attempt. The heuristic firings confirm this is a link farm designed to lure users with game-related scams. The ML classifier also strongly suggests maliciousness. No scripts were extracted, but the primary attack vector appears to be social engineering via deceptive links.

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/how-to-play-paid-acess-roblox-games-free PDF link annotation
    • http://www.torvet11.dk/images/free-robux-hack-easy-and-fast-website.pdf%0AIn PDF document text
    • http://gops.pruszczgdanski.pl/images/hack-roblox-now.pdf%0AIn PDF document text
    • http://gingerscience.co.in/images/roblox-how-to-hack-with-cookies.pdf%0AIn PDF document text
    • https://luminouswisdom.org/images/cheat-codes-to-get-free-robux.pdf%0AIn PDF document text
    • http://jugendfeuerwehr-scheinfeld.de/images/roblox-pants-black-free.pdf%0AIn PDF document text
    • http://www.evaplast.by/images/how-to-cheat-in-dna-on-ds-roblox.pdf%0AIn PDF document text
    • https://www.stkdb.cz/images/roblox-free-gift-card-codes-reddit.pdf%0AIn PDF document text
    • http://www.brtes.com/images/nuvos-hack-de-roblox-6-05-2021.pdf%0AIn PDF document text
    • https://www.hbproducts.dk/images/download-roblox-free-windows-7.pdf%0AIn PDF document text
    • https://www.abrapppe.org.br/images/roblox-free-robux-giveaway-id.pdf%0AIn PDF document text
    • http://www.lascalamilanowallcovering.it/images/roblox-jailbreak-how-to-get-money-hack.pdf%0AIn PDF document text
    • http://www.jureclomas.com.ar/images/free-robux-redeem-codes-2021.pdf%0AIn PDF document text
    • http://www.pro-futuro.eu/images/roblox-fashion-famous-hack.pdf%0AIn PDF document text
    • http://evro-okna.net/images/can-you-hack-a-roblox-account.pdf%0AIn PDF document text
    • http://www.tamogatoweb.hu/images/roblox-free-injector.pdf%0AIn PDF document text
    • http://pa-tanjungselor.go.id/images/roblox-a340-free.pdf%0AIn PDF document text
    • https://www.wildpark-johannismuehle.de/images/hack-de-counter-blox-roblox-offensive.pdf%0AIn PDF document text
    • https://meltonschool.org/images/roblox-free-body-block.pdf%0AIn PDF document text
    • http://zarinnameh.ir/images/roblox-monstersimulator-hack-script.pdf%0AIn PDF document text
    • https://estalagemmonteverde.com.br/images/free-400-robux-code.pdf%0AIn PDF document text
    • https://fkg.usu.ac.id/images/how-do-get-free-rocket-fuel-in-roblox-jailbreak.pdf%0AIn PDF document text
    • https://www.foodsafety.cz/images/tp-hacks-roblox.pdf%0AIn PDF document text
    • http://sscclc.edu.ec/images/free-robux-generator-no-survey-2021.pdf%0AIn PDF document text
    • http://sscclc.edu.ec/images/how-to-turn-off-cheats-in-roblox.pdf%0AIn PDF document text
    • https://www.elevage-chiot.fr/images/roblox-tycoon-simulator-hack.pdf%0AIn PDF document text
    • http://www.gadanie.lv/images/free-shirts-on-roblox-2021.pdf%0AIn PDF document text
    • http://www.kalaaliaraq.dk/images/roblox-one-piece-rampage-script-hack.pdf%0AIn PDF document text
    • http://medimacs.eu/images/free-roblox-toy-codes-unused.pdf%0AIn PDF document text
    • https://www.abrapppe.org.br/images/free-roblox-followers-2021.pdf%0AIn PDF document text
    • http://nosocomium.rv.ua/images/roblox-survivalist-alpha-hack.pdf%0AIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn extracted file (font_00_sfnt_off00004643.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004643.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4643 23720 bytes
SHA-256: c4495543eea89c9a6f02fb02d6bff01bb07b234e84774fc627f3462fe76a613a
font_01_sfnt_off00007c42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C42 18792 bytes
SHA-256: 28360231d12e74c0217307dec56eda797be629902e5fc18d63058119124de314