Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c8fdd1d452babb3…

MALICIOUS

PDF

46.3 KB Created: 2021-04-03 13:07:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 38675bf3c43f824c73532453cb3da668 SHA-1: d1bcab06660d4b8ae3805e9594da8cdb20db2072 SHA-256: 4c8fdd1d452babb3f9f65689ba7b88d5fa61545b8ed0c00cdc9ca39bc27470e0
132 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous links and references to game hacks, specifically for Roblox, and promises of free in-game currency (Robux). The heuristic firings indicate this is a link farm designed to lure users to scam websites. While no scripts were extracted, the document body and embedded URLs strongly suggest a phishing or scamming attempt to trick users into visiting malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7470

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-phantom-forces-hack-deutsch PDF link annotation
    • http://www.fanciullovito.it/images/roblox-inspect-element-free-robux-pastebin.pdfIn PDF document text
    • http://ff-obertraun.at/images/free-roblox-meme-avatars.pdfIn PDF document text
    • http://salantiskis.lt/images/roblox-apocalypse-rising-hack-script.pdfIn PDF document text
    • http://www.rezbb.sk/images/codigos-para-hackear-cuentas-de-roblox.pdfIn PDF document text
    • https://www.udivadlahotel.cz/images/roblox-join-group-free-robux.pdfIn PDF document text
    • https://www.seeingindependence.org/images/hack-noclimb-roblox-2021-marzo.pdfIn PDF document text
    • https://accord.kiev.ua/images/free-robux-without-survey-or-human-verification.pdfIn PDF document text
    • http://www.web.stc-part.co.th/images/how-to-get-free-admin-in-any-roblox-game.pdfIn PDF document text
    • http://www.inservis.cl/images/free-robux-promise.pdfIn PDF document text
    • http://uptodate.az/images/do-you-get-free-robux.pdfIn PDF document text
    • https://tokunfome.com.br/images/how-to-use-cheat-engine-for-robux.pdfIn PDF document text
    • https://www.romedia.gr/images/cheat-code-for-dayz-roblox.pdfIn PDF document text
    • http://portal.crfsp.org.br/images/free-roblox-promo-codes-march-21.pdfIn PDF document text
    • http://www.hawler.in/images/how-to-hack-roblox-rpg-games.pdfIn PDF document text
    • http://pa-tanjungselor.go.id/images/roblox-free-stuff-list.pdfIn PDF document text
    • http://ff-obertraun.at/images/cheat-bee-swarm-simulator-roblox.pdfIn PDF document text
    • http://kruiz21.ru/images/how-to-hack-to-get-robux-2021.pdfIn PDF document text
    • http://svp-steinmaur.ch/images/roblox-hacks-hub.pdfIn PDF document text
    • http://www.ntc.edu.za/images/how-to-get-free-robux-january-2021.pdfIn PDF document text
    • http://www.lycee-langevin-wallon.com/images/pastebm-free-roblox-accounts.pdfIn PDF document text
    • http://www.jureclomas.com.ar/images/cheat-engine-speed-hack-roblox.pdfIn PDF document text
    • http://www.vktzunami.cz/images/www-roblox-cheat-com.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/download-hack-roblox-cb-ro.pdfIn PDF document text
    • https://tokunfome.com.br/images/free-shirts-on-roblox-2021.pdfIn PDF document text
    • http://www.ntc.edu.za/images/real-free-stuff-roblox.pdfIn PDF document text
    • http://www.kalaaliaraq.dk/images/noclip-cheat-for-roblox.pdfIn PDF document text
    • http://www.boic.nl/images/hack-para-tener-robux-enderobux117.pdfIn PDF document text
    • https://www.tsdb.com.au/images/more-robux-for-free-no-verification.pdfIn PDF document text
    • https://fkg.usu.ac.id/images/is-friending-a-roblox-hacker-bad.pdfIn PDF document text
    • https://socialvalue.gr/images/robux-hack-deutsch-pc.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn extracted file (stream_003_off00004405.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004405.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4405 25276 bytes
SHA-256: 14bedf0bf6c920257e129df23e6d10242f2d8145519346e991c0a5c9db20082b
font_01_sfnt_off00007e13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E13 7340 bytes
SHA-256: eeecb17879fffe8a65d2130c15c018a0a3e3a1d10dc8169b933e2d028b00ada0
font_02_sfnt_off00008f9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F9E 19064 bytes
SHA-256: 5fa1c35c2caeb8ff8be816a7992bd9d7644f8dc323df622ffd49e0024a6a60bf