Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa9ba88012d73924…

MALICIOUS

PDF

33.2 KB Created: 2021-04-04 03:40:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-11
MD5: a4de28f177bcf02d90158bf622bcbd0b SHA-1: 6dd016793b944d0a66bc9c3a7536275d21764037 SHA-256: fa9ba88012d73924df75607f0f4972f75ce66d577f3d9451e10b6d90aca680dd
132 Risk Score

Malware Insights

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

The PDF contains a large number of links to websites that appear to offer game hacks and cheats, specifically related to Roblox. The heuristic firings indicate this is a link farm designed to lure users to potentially malicious sites. The ML classifier strongly suggests malicious intent, and the presence of numerous external URIs points towards a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9723

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/cheat-engine-roblox-lumber-tycoon-2 PDF link annotation
    • http://dottgagliardi.com/images/roblox-prison-life-cheat-engine-hack.pdf%0AIn PDF document text
    • http://behsanroshd.com/images/how-to-hack-to-change-your-age-in-roblox.pdf%0AIn PDF document text
    • https://www.hbproducts.dk/images/how-to-get-free-admin-commands-in-roblox.pdf%0AIn PDF document text
    • http://zarinnameh.ir/images/how-to-earn-free-robux-2021-xbox-one.pdf%0AIn PDF document text
    • https://www.abrapppe.org.br/images/free-robux-gift-cards-not-used.pdf%0AIn PDF document text
    • http://hondenspecialist-engelien.nl/images/robux-hack-fake-credit-card.pdf%0AIn PDF document text
    • https://accord.kiev.ua/images/robux-cheat-2021.pdf%0AIn PDF document text
    • https://pa-waingapu.go.id/images/free-robux-generator-2021-december.pdf%0AIn PDF document text
    • http://www.marambio.com.ar/images/roblox-pacifico-how-get-free-premium-car.pdf%0AIn PDF document text
    • http://aeroclub-kaernten.at/images/how-to-get-free-robux-no-human-survey.pdf%0AIn PDF document text
    • http://escolaarboc.cat/images/youtube-link-to-roblox-jailbreak-hack-music.pdf%0AIn PDF document text
    • http://bit-sky.com/images/hack-de-dinero-para-jailbreak-roblox.pdf%0AIn PDF document text
    • http://www.eurologistiki.gr/images/archivo-para-poner-a-roblox-para-hackear.pdf%0AIn PDF document text
    • http://salantiskis.lt/images/best-games-to-hack-roblox.pdf%0AIn PDF document text
    • https://www.mvp.co.nz/images/thebesian-get-roblox-ninja-animation-free-robuxian.pdf%0AIn PDF document text
    • http://www.exikom.com.ua/images/how-to-hack-rank-up-in-a-roblox-group-easy.pdf%0AIn PDF document text
    • http://hemmet-strand.dk/images/can-you-get-unbanned-for-hacking-roblox.pdf%0AIn PDF document text
    • http://kids-academy.pl/images/script-roblox-cheat.pdf%0AIn PDF document text
    • https://estalagemmonteverde.com.br/images/roblox-bloxburg-how-to-get-free-money.pdf%0AIn PDF document text
    • https://www.saisystem.it/images/how-to-get-free-robux-on-ipad-mini.pdf%0AIn PDF document text
    • https://www.foodsafety.cz/images/hack-robux-2021-pc.pdf%0AIn PDF document text
    • http://www.lycee-langevin-wallon.com/images/bunny-ears-2021-free-roblox.pdf%0AIn PDF document text
    • http://www.boic.nl/images/how-to-cheat-in-roblox-basewars.pdf%0AIn PDF document text
    • https://www.osoc.com/images/roblox-check-cashed-hacks.pdf%0AIn PDF document text
    • http://iluvlocalplaces.com/images/free-i-robux.pdf%0AIn PDF document text
    • https://sitam.co.in/images/prooving-that-how-to-get-free-cloths-e-free-roblox.pdf%0AIn PDF document text
    • http://ims-77.fr/images/hack-of-2021-roblox.pdf%0AIn PDF document text
    • https://www.hbproducts.dk/images/roblox-account-hacker-tool.pdf%0AIn PDF document text
    • https://www.sitiwebjoomla.it/images/how-to-get-free-robux-chrome-console.pdf%0AIn PDF document text
    • https://www.foodsafety.cz/images/free-robux-account-not-used.pdf%0AIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn extracted file (font_00_sfnt_off000034a1.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000034a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x34A1 18980 bytes
SHA-256: 1151bcedff6540f793d4ad2b740ce6c65db2f3721b3bd58fc0c39e274ff62974
font_01_sfnt_off00005c56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C56 18928 bytes
SHA-256: 0bccc9227c75882a60bb96676436057e4b0fcb609c59b154edea9e763fc48821