Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a8a4918f19a057b…

MALICIOUS

PDF

244.7 KB Created: 2021-04-04 09:48:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 37876639569f81948ccb51ddd442d9ac SHA-1: bdac533150bed8d037dd13e08e6cb74cfcfa4c55 SHA-256: 1a8a4918f19a057b687efda585347ce47618e07ec5433a27ab06e3170f0d1e41
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file is detected as malicious by ClamAV and exhibits characteristics of a phishing lure, including an image-only presentation and a clickable action trigger. The document body, though heavily obfuscated, contains references to 'hack' and 'Roblox', suggesting a lure related to gaming exploits or cheats. The presence of numerous external URLs further supports the hypothesis that this document is designed to redirect users to malicious sites for credential harvesting or malware download.

Machine Learning

  • Nyx PDF Classifier clean score 0.1227

Heuristics 5

  • ClamAV: Pdf.Phishing.Roblox062100-9873116-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Roblox062100-9873116-0
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 244 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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/hack-de-dragon-ball-rage-roblox-2021 PDF link annotation
    • http://www.vktzunami.cz/images/roblox-change-robux-pastebin-hack.pdfIn PDF document text
    • http://hindicenter.com/images/auto-clicker-for-roblox-mac-free.pdfIn PDF document text
    • https://www.utalii.ac.ke/images/roblox-jailbreak-free-keycard.pdfIn PDF document text
    • http://elllanorestaurants.com/images/how-to-have-free-robux-on-roblox-2021.pdfIn PDF document text
    • http://armatrutz.de/images/jailbreak-roblox-hack-2021.pdfIn PDF document text
    • https://pemadamapi.net/images/buy-robux-for-free-games.pdfIn PDF document text
    • http://kids-academy.pl/images/how-to-fly-hack-in-tower-of-hell-roblox.pdfIn PDF document text
    • http://hotel-buta.by/images/free-roblox-redeem-card-codes-2021-august.pdfIn PDF document text
    • http://androidthai.in.th/images/how-to-hack-protect-jojo-roblox.pdfIn PDF document text
    • http://unc-europe.com/images/free-robux-promo-codes-2021-march.pdfIn PDF document text
    • http://wcasrock.org/images/hacking-2021-members-into-my-group-roblox.pdfIn PDF document text
    • http://alexandrion.com/images/roblox-hacks-robux-december-2021.pdfIn PDF document text
    • https://schulzpressetext.de/images/roblox-games-that-cheat-engine-works-on.pdfIn PDF document text
    • http://alpen-seeblick.at/images/how-to-get-400-free-robux.pdfIn PDF document text
    • http://pia2000.net/images/roblox-assassin-hacks-2021.pdfIn PDF document text
    • http://ns1.radiofacil.net/images/free-shovocado-roblox.pdfIn PDF document text
    • https://www.brainpads.com/images/roblox-cheats-prison-life.pdfIn PDF document text
    • https://grovehilloutfitters.com/images/the-conquerors-roblox-hacked.pdfIn PDF document text
    • https://www.ncscolour.no/images/roblox-com-login-free.pdfIn PDF document text
    • https://luminouswisdom.org/images/roblox-god-mode-cheat-engine-64.pdfIn PDF document text
    • https://www.seeingindependence.org/images/free-modded-roblox-games.pdfIn PDF document text
    • https://estalagemmonteverde.com.br/images/free-robux-codes-2021-september.pdfIn PDF document text
    • http://techmobil.pl/images/earn-free-robux-vrobux-com.pdfIn PDF document text
    • http://iluvlocalplaces.com/images/make-robux-for-free.pdfIn PDF document text
    • http://www.remiauclair.fr/images/free-robux-gift-card-codes-2021-november.pdfIn PDF document text
    • http://asiashop-france.fr/images/case-clicker-hack-2021-roblox.pdfIn PDF document text
    • http://parkinsononline.com/images/how-to-get-free-robux-february-2021.pdfIn PDF document text
    • http://www.htc.edu.au/images/best-free-roblox-games.pdfIn PDF document text
    • https://beejekorf.nl/images/free-roblox-3d-loading-screen.pdfIn PDF document text
    • https://hassel-event.de/images/free-manquin-roblox.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00037feb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x37FEB 19384 bytes
SHA-256: 550fffc8c1f8852f445d187f3dafa1bf5ccfb7780f83c3122b9bfc83d2a071c2
font_01_sfnt_off0003a8ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3A8CE 18576 bytes
SHA-256: 12da289fcdcd8ad6cc78531ae593f7e22d1b800e1277cd9f665558730ce1179a

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