Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef645ae8085fae91…

MALICIOUS

PDF

36.4 KB Created: 2021-06-27 12:18:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 8565b7b8cf855939b1c4be8500272c0e SHA-1: 559fbeb140d8f411e99bc6e257a2002855ce72f6 SHA-256: ef645ae8085fae91d14b1f8aef298e6806e88ba3ae5625e581fff864c3fe9b0c
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.co/app/431946152/how-do-you-get-free-robux-without-human-verification-game-hack PDF link annotation
    • https://www.intercraftgallery.com/uploaded_files/userfiles/files/how-to-get-free-robux-for-free_GM431946152.pdfIn PDF document text
    • https://www.intercraftgallery.com/uploaded_files/userfiles/files/roblox-mafia-cloth-free_GM431946152.pdfIn PDF document text
    • https://www.intercraftgallery.com/uploaded_files/userfiles/files/how-to-get-roblox-credit-for-free_GM431946152.pdfIn PDF document text
    • https://www.intercraftgallery.com/uploaded_files/userfiles/files/free-roblox-accounts-forums_GM431946152.pdfIn PDF document text
    • https://www.intercraftgallery.com/uploaded_files/userfiles/files/tiktok-followers-for-free_GM835599320.pdfIn PDF document text
    • https://www.intercraftgallery.com/uploaded_files/userfiles/files/free-minecraft-java-edition_GM479516143.pdfIn PDF document text
    • https://www.intercraftgallery.com/uploaded_files/userfiles/files/error-connecting-pipe-3-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://www.intercraftgallery.com/uploaded_files/userfiles/files/roblox-robux-gratis-hack_GM431946152.pdfIn PDF document text
    • https://www.intercraftgallery.com/uploaded_files/userfiles/files/que-hacer-cuando-te-hackean-la-cuenta-de-roblox_GM431946152.pdfIn PDF document text
    • https://www.intercraftgallery.com/uploaded_files/userfiles/files/free-robux-no-verification-no-download_GM431946152.pdfIn PDF document text
    • https://www.intercraftgallery.com/uploaded_files/userfiles/files/hacks-for-champion-simulator-roblox_GM431946152.pdfIn PDF document text
    • https://www.intercraftgallery.com/uploaded_files/userfiles/files/free-printable-minecraft-coloring-pages_GM479516143.pdfIn PDF document text
    • https://www.intercraftgallery.com/uploaded_files/userfiles/files/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • https://www.intercraftgallery.com/uploaded_files/userfiles/files/free-muscle-t-shirt-roblox_GM431946152.pdfIn PDF document text
    • https://www.intercraftgallery.com/uploaded_files/userfiles/files/free-minecraft-skin-packs_GM479516143.pdfIn PDF document text
    • https://www.intercraftgallery.com/uploaded_files/userfiles/files/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • https://www.intercraftgallery.com/uploaded_files/userfiles/files/free-followers-on-tiktok_GM835599320.pdfIn PDF document text
    • https://www.intercraftgallery.com/uploaded_files/userfiles/files/free-tuxedo-roblox_GM431946152.pdfIn PDF document text
    • https://www.intercraftgallery.com/uploaded_files/userfiles/files/free-draw-2-roblox-hack_GM431946152.pdfIn PDF document text
    • https://www.intercraftgallery.com/uploaded_files/userfiles/files/como-descarar-roblox-hack-para-pc_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003414.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3414 22376 bytes
SHA-256: a6cd89b5e149ad012bb96a32f993278365d74f440b10609f8e90df85eb2f1b13
font_01_sfnt_off00006609.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6609 20192 bytes
SHA-256: c9b1f753d3339c6e9a098573695bf4013a957b828340f04007d8c1fff2994a4c

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