Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b347f48927d0860…

MALICIOUS

PDF

42.6 KB Created: 2021-04-03 15:07:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 58cfc91e664175aa1fadf9d8bb13d9f4 SHA-1: ed24a7e8384b0d72e1490aa7feb3b6974ec9e863 SHA-256: 3b347f48927d0860b95b769de212c15edbae4649c97fa462bcee814de137adc3
132 Risk Score

Malware Insights

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

The PDF contains numerous links and references to game hacking and free in-game currency, specifically targeting Roblox players. The heuristic firings indicate a link farm designed to lure users to scam websites. The ML classifier also flagged this PDF as malicious with high confidence. The primary attack pattern involves tricking users into clicking malicious links that likely lead to phishing sites or malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9175

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/roblox-yard-work-simulator-hack PDF link annotation
    • http://www.web.stc-part.co.th/images/free-roblox-and-robux.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/lego-roblox-hacking.pdfIn PDF document text
    • https://www.ncscolour.no/images/roblox-free-muscle-shirt.pdfIn PDF document text
    • https://www.u-pin-it.com/images/can-free-models-steal-your-password-roblox.pdfIn PDF document text
    • http://learningarabic.co.uk/images/how-to-hack-roblox-games-2021.pdfIn PDF document text
    • http://www.boic.nl/images/free-robux-promo-codes-august-2021.pdfIn PDF document text
    • http://domaizdereva24.ru/images/bucks-gg-free-robux.pdfIn PDF document text
    • https://www.wildpark-johannismuehle.de/images/third-person-hack-roblox.pdfIn PDF document text
    • https://www.seeingindependence.org/images/hack-de-roblox-para-atravesar-cosas.pdfIn PDF document text
    • https://www.dierenartsberghman.be/images/is-free-robux-illegal.pdfIn PDF document text
    • http://www.cosver.nl/images/how-to-get-free-robux-instantly-2021.pdfIn PDF document text
    • http://www.occquimica.com.br/images/robux-account-hack.pdfIn PDF document text
    • http://portal.crfsp.org.br/images/cookie-hack-roblox-players-on-galaxy-note-8.pdfIn PDF document text
    • http://uctovnictvosnv.sk/images/unpatchable-new-roblox-exploit-hack-skyline-stat-change.pdfIn PDF document text
    • http://echosvoix.ch/images/name-change-client-roblox-free.pdfIn PDF document text
    • http://bkd1.balikpapan.go.id/images/roblox-wizard-life-galleons-hack.pdfIn PDF document text
    • http://www.eurosan1.ba/images/cheat-roblox-en-francais.pdfIn PDF document text
    • http://nosocomium.rv.ua/images/roblox-snow-shoveling-simulator-free-santa-bag-inf.pdfIn PDF document text
    • http://portal.crfsp.org.br/images/how-to-get-free-tix-on-roblox-high-school.pdfIn PDF document text
    • https://www.milewood.co.uk/images/roblox-builders-club-free-codes.pdfIn PDF document text
    • https://consorziocsa-asicaivano.it/images/how-to-hack-someones-roblox-account-with-link.pdfIn PDF document text
    • http://portal.crfsp.org.br/images/a-free-trial-on-roblox.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/roblox-script-hack-robux.pdfIn PDF document text
    • http://www.eurosan1.ba/images/roblox-salvage-hacks.pdfIn PDF document text
    • http://www.pcclawyers.com.au/images/how-to-get-free-diamonds-in-roblox-royale-high-school.pdfIn PDF document text
    • http://aeroclub-kaernten.at/images/how-to-get-free-robux-2021-jefftech.pdfIn PDF document text
    • http://bkd1.balikpapan.go.id/images/hacking-a-fans-roblox-account.pdfIn PDF document text
    • http://www.eurologistiki.gr/images/prison-life-gives-free-robux.pdfIn PDF document text
    • https://www.cosmosdawn.net/images/roblox-invitations-free.pdfIn PDF document text
    • https://www.cfdcnv.com/images/free-roblox-scripter.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn extracted file (font_00_sfnt_off000044a3.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000044a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x44A3 22964 bytes
SHA-256: 74c6c47a667bf48c2968c54cc67627c50dab9d6c97340c3de3b90d63f823dac7
font_01_sfnt_off00007791.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7791 2984 bytes
SHA-256: 15fa605262285dfa73b694d259bab9c45b3003b991993000b226b6edb761bd99
font_02_sfnt_off000081e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81E4 18584 bytes
SHA-256: 9a4f15b439d0a791f9fafe9ad37e8ff80d261c2c392b8b135c0145812238b010