Malicious PDF — malware analysis report

Static analysis result for SHA-256 31141ef837b2cbc3…

MALICIOUS

PDF

53.8 KB Created: 2021-04-06 08:48:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 82a0e4ecba4698132cee1d85198cab2f SHA-1: 33318295908f95d97f8b297855e693532a6dfd4d SHA-256: 31141ef837b2cbc3b14abc6988eeea63525dabc4b66170ad34a49da3de01d273
110 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs, with a primary focus on luring users with 'free generator / game hack' content related to Roblox. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' strongly indicates this malicious intent. While no scripts were directly extracted, the document's structure and embedded links suggest it's designed to redirect users to potentially malicious websites for scams or further payload delivery. The presence of urgency and download button lures, though low-signal individually, reinforce the phishing-like nature of the document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8413

Heuristics 5

  • PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://enigmagenerator.com/app/431946152/roblox-game-hack PDF link annotation
    • https://cdu-lengerich.de/images/hack-para-roblox-2021-abril.pdfIn PDF document text
    • http://hk-kan.org/images/free-robux-games-on-ipad.pdfIn PDF document text
    • http://properteez.com/images/roblox-free-username-change.pdfIn PDF document text
    • http://interpretation-dessins-enfants.net/images/hacks-for-piano-auditoriam-roblox.pdfIn PDF document text
    • http://ozonizarint.com/images/hacking-in-roblox-greenvillebeta.pdfIn PDF document text
    • http://kulturhusbabberich.nl/images/get-800-robux-for-free-gamekit.pdfIn PDF document text
    • http://pdapanache.com/images/how-to-hack-money-on-any-roblox-game.pdfIn PDF document text
    • http://huebner-baustoffe.de/images/roblox-online-hack-generator.pdfIn PDF document text
    • http://avocatultau.eu/images/visenya-roblox-exploit-free-download.pdfIn PDF document text
    • http://www.learningbydoinglingue.com/images/secret-youtuber-dantdm-gives-promocodes-working-free-robux.pdfIn PDF document text
    • http://hondenspecialist-engelien.nl/images/latest-roblox-hacks-2021.pdfIn PDF document text
    • https://www.audev.com/images/how-to-hack-peoples-account-on-roblox-2021.pdfIn PDF document text
    • http://www.jureclomas.com.ar/images/free-robux-promotions.pdfIn PDF document text
    • http://sscclc.edu.ec/images/how-do-you-hack-somebody-in-roblox.pdfIn PDF document text
    • https://www.lavigny.ch/images/roblox-obux-hack-client.pdfIn PDF document text
    • http://principessalialaofegypt.com/images/roblox-hack-free-robux-pc.pdfIn PDF document text
    • http://sscclc.edu.ec/images/free-robux-no-survey.pdfIn PDF document text
    • https://www.foodsafety.cz/images/how-to-get-free-robux-easy-no-download-2021.pdfIn PDF document text
    • http://bunadsmaria.com/images/free-roblox-account-site-youtubecom.pdfIn PDF document text
    • http://stitchingart.com/images/v3rmillion-free-roblox-accounts.pdfIn PDF document text
    • http://selectionspdf.fr/images/lila-plays-free-robux.pdfIn PDF document text
    • http://onlinemusicsolutions.com.au/images/free-robux-no-survey-or-app-download.pdfIn PDF document text
    • http://sdservicesrl.it/images/roblox-org-free-robux.pdfIn PDF document text
    • http://pa-tanjungselor.go.id/images/free-robux-every-5-seconds-directo.pdfIn PDF document text
    • https://www.apartmanychorvatsko24.cz/images/roblox-booga-booga-cheat-duplication.pdfIn PDF document text
    • https://meltonschool.org/images/how-to-get-an-egtv-tshirt-for-free-no-robux.pdfIn PDF document text
    • https://treeconsult.de/images/crystalsheepyoutube-how-to-get-free-robux.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/download-kranberry-roblox-hack.pdfIn PDF document text
    • https://www.apartmanychorvatsko24.cz/images/free-candy-id-for-roblox.pdfIn PDF document text
    • http://stackideas.com/images/money-hack-roblox-jailbreak-2021.pdfIn PDF document text
    • http://www.peterdejonge.nl/images/free-anime-roblox-shirt.pdfIn PDF document text
    • http://famoirs.co.uk/images/how-to-hack-roblox-on-android.pdfIn PDF document text
    • http://www.bbnest.it/images/growboxnet-free-robux.pdfIn PDF document text
    • http://solidcommunication.ch/images/money-hack-for-roblox-vehicle-simulator.pdfIn PDF document text
    • https://donrazvitie.ru/images/roblox-hack-tool-robux-and-tix-no-download.pdfIn PDF document text
    • http://shootawayproduction.com/images/free-robux-code-generator-tool-no-human-verification.pdfIn PDF document text
    • http://agriconservizi.com/images/using-cheat-engine-on-roblox-bluestacks.pdfIn PDF document text
    • http://stitchingart.com/images/free-robux-no-pass-required.pdfIn PDF document text
    • http://hondenspecialist-engelien.nl/images/roblox-exploit-injector-hacks.pdfIn PDF document text
    • http://www.hotelcomelico.it/images/wearedevs-roblox-hack-karava.pdfIn PDF document text
    • http://almacargo.com/images/how-to-free-robux-on-computer.pdfIn PDF document text
    • http://www.marambio.com.ar/images/free-robux-promo-codes-2021-june.pdfIn PDF document text
    • https://semanasantacehegin.com/images/anarchy-hacks-roblox.pdfIn PDF document text
    • http://www.visiblefilm.com/images/how-to-get-free-things-on-roblox-without-robux.pdfIn PDF document text
    • http://principessalialaofegypt.com/images/how-to-hack-any-account-roblox-2021-windows-10.pdfIn PDF document text
    • http://agrupamentoescolas-alfredo-da-silva.com/images/script-free-robux-2021-no-fake.pdfIn PDF document text
    • http://aeroclub-kaernten.at/images/hacker-roblox-portable.pdfIn PDF document text
    • http://apeh.ro/images/how-to-hack-someones-rolox-account-on-roblox.pdfIn PDF document text
    • http://jointworkstudio.com/images/hacks-para-jailbreak-roblox-2021.pdfIn PDF document text
    +16 more URL(s)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00007170.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x7170 28548 bytes
SHA-256: e88c273a36a5ae3585e19f3c62118cccab84f69930721bd377114b798e60381f
font_01_sfnt_off0000b081.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB081 17660 bytes
SHA-256: 2bd6742051f326e51f071ca93c5dcaae354d7d647ebcec1fc4777e75700ad759

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