Malicious PDF — malware analysis report

Static analysis result for SHA-256 320cd2e4978f837d…

MALICIOUS

PDF

34.4 KB Created: 2021-07-04 06:51:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 41dd4b1245b53130ea8f833ec13e4755 SHA-1: df3ecb32fa710d5cbd941fb3e50ec1e009290075 SHA-256: 320cd2e4978f837dc480a053632c11ac560044a8a7564591e60bca2f86bf423d
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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://netcdn.tw/app/431946152/free-robux-without-verification-game-hack PDF link annotation
    • https://www.laksanatravel.com/ckfinder/userfiles/files/free-robux-without-verify_GM431946152.pdfIn PDF document text
    • https://www.laksanatravel.com/ckfinder/userfiles/files/how-to-get-free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.laksanatravel.com/ckfinder/userfiles/files/roblox-hacked-com-2021_GM431946152.pdfIn PDF document text
    • https://www.laksanatravel.com/ckfinder/userfiles/files/roblox-the-streets-hack_GM431946152.pdfIn PDF document text
    • https://www.laksanatravel.com/ckfinder/userfiles/files/cm-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://www.laksanatravel.com/ckfinder/userfiles/files/roblox-sad-cheating-story-albert-he-cried-on-video-new_GM431946152.pdfIn PDF document text
    • https://www.laksanatravel.com/ckfinder/userfiles/files/how-to-get-free-robux-without-downloading-apps-2021_GM431946152.pdfIn PDF document text
    • https://www.laksanatravel.com/ckfinder/userfiles/files/free-roblox-intro-template_GM431946152.pdfIn PDF document text
    • https://www.laksanatravel.com/ckfinder/userfiles/files/coin-master-spins-gratis_GM406889139.pdfIn PDF document text
    • https://www.laksanatravel.com/ckfinder/userfiles/files/robux-free-co_GM431946152.pdfIn PDF document text
    • https://www.laksanatravel.com/ckfinder/userfiles/files/hacks-menu-for-roblox_GM431946152.pdfIn PDF document text
    • https://www.laksanatravel.com/ckfinder/userfiles/files/how-to-get-free-roebucks-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.laksanatravel.com/ckfinder/userfiles/files/how-to-get-creative-mode-in-minecraft-server-hack_GM479516143.pdfIn PDF document text
    • https://www.laksanatravel.com/ckfinder/userfiles/files/roblox-free-demo_GM431946152.pdfIn PDF document text
    • https://www.laksanatravel.com/ckfinder/userfiles/files/do-free-robux-scams-work_GM431946152.pdfIn PDF document text
    • https://www.laksanatravel.com/ckfinder/userfiles/files/roblox-hack-meep-city-phone_GM431946152.pdfIn PDF document text
    • https://www.laksanatravel.com/ckfinder/userfiles/files/free-minecraft-accounts-2021_GM479516143.pdfIn PDF document text
    • https://www.laksanatravel.com/ckfinder/userfiles/files/how-to-hack-into-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • https://www.laksanatravel.com/ckfinder/userfiles/files/how-to-hack-roblox-for-beginners_GM431946152.pdfIn PDF document text
    • https://www.laksanatravel.com/ckfinder/userfiles/files/games-on-roblox-that-give-you-free-robux_GM431946152.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_off00003064.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3064 21768 bytes
SHA-256: 79dc88363547f314d7f1145cb728737fe083f716ee8776b7e0e2e458aee26800
font_01_sfnt_off00006079.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6079 19436 bytes
SHA-256: 45b9ce1014872b369476cc75d8a7b63b2e3ed395e28419daf66bd30eabd4401a

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