Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c25695d4242d08f…

MALICIOUS

PDF

33.4 KB Created: 2021-04-03 22:15:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 19f6a8a5593eb27c1ba125716b62fd22 SHA-1: 39c5159881f16fd6663a07d92bc1d0016d18cd95 SHA-256: 8c25695d4242d08f1b3816ba6b9afd3712103f002528070919a6b90d7aa10ca0
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 URLs and a document body that exclusively consists of these URLs, all related to 'Roblox' game hacks and free currency. The heuristic firings confirm this is a link farm designed to lure users to scam websites. The primary attack pattern involves tricking users into clicking malicious links, likely for financial gain or to deliver further malware.

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/free-unused-roblox-gift-card-codes-2021 PDF link annotation
    • http://stroygrad-spb.com/images/how-to-get-any-package-for-free-roblox.pdf%0AIn PDF document text
    • http://www.exikom.com.ua/images/roblox-hack-robux-easy.pdf%0AIn PDF document text
    • http://agrao.in/images/has-my-computer-been-hacked-playing-roblox.pdf%0AIn PDF document text
    • https://www.wildpark-johannismuehle.de/images/https-wwwfree-robuxcom.pdf%0AIn PDF document text
    • https://www.elevage-chiot.fr/images/how-do-u-get-free-robux-2021.pdf%0AIn PDF document text
    • http://bkd1.balikpapan.go.id/images/john-roblox-free.pdf%0AIn PDF document text
    • http://www.maakherumusic.net/images/greg-hacker-roblox-twitter.pdf%0AIn PDF document text
    • https://accord.kiev.ua/images/money-hack-roblox-galaxy.pdf%0AIn PDF document text
    • https://www.romedia.gr/images/robux-hack-without-downloading-games.pdf%0AIn PDF document text
    • http://www.nielsen2u.dk/images/free-robux-card-codes-generator.pdf%0AIn PDF document text
    • https://www.u-pin-it.com/images/when-do-hackers-hack-roblox.pdf%0AIn PDF document text
    • https://www.cosmosdawn.net/images/roblox-hack-gameplay-jailbreak.pdf%0AIn PDF document text
    • http://uctovnictvosnv.sk/images/codes-admin-get-free-robux-roblox.pdf%0AIn PDF document text
    • http://sscclc.edu.ec/images/roblox-treelands-hack.pdf%0AIn PDF document text
    • http://infoagronomia.com.ar/images/free-robux-hack-2021-april-may.pdf%0AIn PDF document text
    • https://www.saisystem.it/images/cheats-to-get-robux-on-roblox-2021.pdf%0AIn PDF document text
    • https://amatq.ca/images/free-robux-2021-december.pdf%0AIn PDF document text
    • https://www.stkdb.cz/images/roblox-free-account-and-password-2021-with-robux.pdf%0AIn PDF document text
    • http://www.malonmalon.com.ar/images/hacks-for-de-oride-isle-sanatorium-roblox.pdf%0AIn PDF document text
    • http://www.mjclautrec.fr/images/robloxjailbreakfreehacks.pdf%0AIn PDF document text
    • https://www.lomrad.go.th/images/how-to-get-r-on-roblox-for-free.pdf%0AIn PDF document text
    • https://koeltotaal.com/images/hacking-script-download-roblox.pdf%0AIn PDF document text
    • https://www.lomrad.go.th/images/free-robux-robux-game.pdf%0AIn PDF document text
    • http://energotestcontrol.ru/images/how-to-cheat-money-in-roblox-high-school.pdf%0AIn PDF document text
    • http://www.actae.gr/images/roblox-hack-robux-cheat-engine-61.pdf%0AIn PDF document text
    • http://poltekkeskhjogja.ac.id/images/roblox-hack-mad-city.pdf%0AIn PDF document text
    • http://www.eurosan1.ba/images/roblox-get-any-item-off-the-catalogue-for-free-2021.pdf%0AIn PDF document text
    • http://www.torvet11.dk/images/robux-gives-roblox-hacks-free-roblox.pdf%0AIn PDF document text
    • https://www.romedia.gr/images/hack-roblox-dll.pdf%0AIn PDF document text
    • https://www.seeingindependence.org/images/yt-roblox-parkour-you-can-free-runing-the-buy.pdf%0AIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn extracted file (font_00_sfnt_off00003456.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003456.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3456 19156 bytes
SHA-256: 1f33b0d21d0b9d34f1e572da97a3286987bef8cfddcd31f445b254f0561f28ac
font_01_sfnt_off00005c97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C97 19048 bytes
SHA-256: 00f26b5ebae8f44bd93f952780d29365862b8d2164e1721a681ec9db9d6619c7