PDF malware analysis — malicious · 4c3f1860a63c4f13

MALICIOUS

PDF

61.0 KB Created: 2021-04-05 18:29:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24

MD5: 859788a7d906be1e46060f39f331e595 SHA-1: 9a3f78c98b9e6e3174beadc231f49e661604db69 SHA-256: 4c3f1860a63c4f13a48c98d3f8ae7ad3976da47962a246da36da3c235020d1b1

122 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

The PDF document contains a lure impersonating PayPal, directing users to a URL that promises free Robux. This social engineering tactic, combined with heuristics indicating a browser extension installation lure and a malicious ML classification, strongly suggests an attempt to trick users into credential theft or downloading further malware. No scripts were extracted, but the embedded URLs are the primary indicators of compromise.

Machine Learning

Nyx PDF Classifier malicious score 0.6030

Heuristics 5

Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE

Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH

Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: http://gaminggenerator.org/app/431946152/lohith-gaming-free-robux-6k.
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/lohith-gaming-free-robux-6k PDF link annotation
- https://estalagemmonteverde.com.br/images/robux-hack-without-human-verification-2021.pdfIn PDF document text
- http://sbm-nn.ru/images/roblox-free-view-camera.pdfIn PDF document text
- http://hemmet-strand.dk/images/robux-tool-hack.pdfIn PDF document text
- https://www.najeebqasmi.com/images/free-roblox-sex.pdfIn PDF document text
- http://columbuscigar.com/images/free-roblox-outfits-2021.pdfIn PDF document text
- https://www.wildpark-johannismuehle.de/images/how-to-sell-clothes-for-free-on-roblox-place.pdfIn PDF document text
- http://pia2000.net/images/gamekit-800-free-robux.pdfIn PDF document text
- http://www.hotelcimone.it/images/roblox-money-cheats-2021.pdfIn PDF document text
- https://www.udivadlahotel.cz/images/pastel-hair-roblox-free.pdfIn PDF document text
- https://www.mrsz.ir/images/hacks-for-roblox-phantom-forces-2021.pdfIn PDF document text
- http://heddalboring.no/images/yyoutube-robux-hacks-2021.pdfIn PDF document text
- http://5346000.com/images/como-tener-dinero-infinito-en-jailbreak-roblox-hack-2021.pdfIn PDF document text
- http://ernstgloves.co.il/images/ninja-assassin-roblox-hack.pdfIn PDF document text
- http://dermaceutic.co.uk/images/doe-roblox-hacks-work.pdfIn PDF document text
- http://ff-obertraun.at/images/redline-cheat-in-roblox.pdfIn PDF document text
- https://www.utalii.ac.ke/images/how-to-get-free-robux-very-easy.pdfIn PDF document text
- https://europainstitut.hu/images/free-trial-builders-club-on-roblox.pdfIn PDF document text
- http://ofthalmiatrosthess.gr/images/freerobux-redeem.pdfIn PDF document text
- http://solidkom.ch/images/how-to-hack-roblox-with-its-source.pdfIn PDF document text
- http://aeroclub-kaernten.at/images/free-roblox-stuff-2021.pdfIn PDF document text
- https://www.lomrad.go.th/images/how-to-get-a-free-2021-2021-roblox-account.pdfIn PDF document text
- http://biccairo.com/images/blackberry-hack-roblox-jailbreak.pdfIn PDF document text
- https://www.abrapppe.org.br/images/zero-hack-roblox.pdfIn PDF document text
- http://santjoandelesabadesses.cat/images/roblox-hack-any-verification.pdfIn PDF document text
- https://arcasict.nl/images/how-to-hack-into-getting-robux.pdfIn PDF document text
- http://www.controverseinterapie.it/images/speed-hack-roblox-app.pdfIn PDF document text
- http://www.malonmalon.com.ar/images/hack-de-roblox-para-atravesar-cosas-facilmente.pdfIn PDF document text
- https://www.lomrad.go.th/images/free-roblox-exploits-2021-not-blocked-by-antivirus.pdfIn PDF document text
- http://legs11.co.za/images/how-to-hack-into-roblox-accounts-2021.pdfIn PDF document text
- http://www.eurologistiki.gr/images/greenlegocats123-how-to-get-free-robux.pdfIn PDF document text
- https://belixconstructions.com.au/images/how-to-hack-roblox-with-cheat-engine-62.pdfIn PDF document text
- http://www.evaplast.by/images/free-robux-secret-hack.pdfIn PDF document text
- http://lechia-sedziszow.pl/images/free-robux-script-2021.pdfIn PDF document text
- http://agrupamentoescolas-alfredo-da-silva.com/images/how-to-get-free-plus-on-meep-city-roblox-2021.pdfIn PDF document text
- http://consultinggirona.es/images/roblox-sir-robux-hack.pdfIn PDF document text
- https://www.mvp.co.nz/images/how-to-hack-your-account-back-on-roblox.pdfIn PDF document text
- http://wattkit.com/images/dbsuper-2-roblox-hack.pdfIn PDF document text
- https://amatq.ca/images/future-free-roblox-exploit.pdfIn PDF document text
- http://echosvoix.ch/images/robux-pastebin-hack.pdfIn PDF document text
- https://schaefer-rechtsanwaelte.com/images/roblox-hack-robux-download-2021.pdfIn PDF document text
- http://www.centromedicoaurora.it/images/clothing-making-software-free-roblox.pdfIn PDF document text
- http://aviaprofsoyuz.info/images/roblox-explode-hack.pdfIn PDF document text
- http://agritrade-ukraine.com/images/jaibreak-hack-roblox-script-auto-aresst.pdfIn PDF document text
- http://lillysonthelake.com/images/how-to-hack-roblox-with-dll-njector.pdfIn PDF document text
- http://www.peterdejonge.nl/images/free-robux-and-tix-no-download-no-survey.pdfIn PDF document text
- http://shiny-nn.ru/images/hacks-para-roblox-strucid.pdfIn PDF document text
- https://www.sitiwebjoomla.it/images/how-to-get-2021-robux-for-free.pdfIn PDF document text
- http://www.kalaaliaraq.dk/images/app-hack-robux.pdfIn PDF document text
- https://amatq.ca/images/hacking-third-party-client-roblox.pdfIn PDF document text
+16 more URL(s)

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_004_off0000855f.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x855F	25520 bytes
SHA-256: `c81025dfd6247b855f6102863787d2cc6f1f636a22093d88bd4eb42e5bdb2d29`
`font_01_sfnt_off0000bf13.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xBF13	2832 bytes
SHA-256: `77ae1c4cffa647a8fd533dfa4102e94364989f9e80b9cd131876e9d1005899a2`
`font_02_sfnt_off0000c8c5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC8C5	18912 bytes
SHA-256: `0a5f5145b3c466c15e2388009566d7b07e22d435fec7f61b2b1e47894c843b7d`

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