Malicious PDF — malware analysis report

Static analysis result for SHA-256 072c5802dbabee73…

MALICIOUS

PDF

35.1 KB Created: 2021-06-27 18:25:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: b7e75639f39ef00bed23c8e66b84cfd2 SHA-1: 2320f443378082eacde52351d2d263b7655be733 SHA-256: 072c5802dbabee739084221d7a228945669e296b604bd03d5e45ab8a91b8421c
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/free-robux-hack-me-game-hack PDF link annotation
    • https://www.ktcart.co.in/uploaded_files/userfiles/files/how-to-get-robux-easy_GM431946152.pdfIn PDF document text
    • https://www.ktcart.co.in/uploaded_files/userfiles/files/how-to-get-free-robux-on-chromebook_GM431946152.pdfIn PDF document text
    • https://www.ktcart.co.in/uploaded_files/userfiles/files/how-to-get-free-minecoins-in-minecraft_GM479516143.pdfIn PDF document text
    • https://www.ktcart.co.in/uploaded_files/userfiles/files/how-do-you-get-free-roblox-2021_GM431946152.pdfIn PDF document text
    • https://www.ktcart.co.in/uploaded_files/userfiles/files/how-to-get-free-robux-com_GM431946152.pdfIn PDF document text
    • https://www.ktcart.co.in/uploaded_files/userfiles/files/by-pubg-uc-free_GM1330123889.pdfIn PDF document text
    • https://www.ktcart.co.in/uploaded_files/userfiles/files/coin-master-free-fire_GM406889139.pdfIn PDF document text
    • https://www.ktcart.co.in/uploaded_files/userfiles/files/robux-earning-websites_GM431946152.pdfIn PDF document text
    • https://www.ktcart.co.in/uploaded_files/userfiles/files/how-to-put-shirts-for-free-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.ktcart.co.in/uploaded_files/userfiles/files/toolbox-for-minecraft-ios_GM479516143.pdfIn PDF document text
    • https://www.ktcart.co.in/uploaded_files/userfiles/files/help-my-roblox-account-got-hacked-and-dosent-have-security_GM431946152.pdfIn PDF document text
    • https://www.ktcart.co.in/uploaded_files/userfiles/files/free-robux-hack-script-v3rmillion_GM431946152.pdfIn PDF document text
    • https://www.ktcart.co.in/uploaded_files/userfiles/files/free-bobux_GM431946152.pdfIn PDF document text
    • https://www.ktcart.co.in/uploaded_files/userfiles/files/coin-master-working-hack_GM406889139.pdfIn PDF document text
    • https://www.ktcart.co.in/uploaded_files/userfiles/files/roblox-builders-club-hack-no-survey_GM431946152.pdfIn PDF document text
    • https://www.ktcart.co.in/uploaded_files/userfiles/files/free-ways-to-get-robux_GM431946152.pdfIn PDF document text
    • https://www.ktcart.co.in/uploaded_files/userfiles/files/coin-spin-link_GM406889139.pdfIn PDF document text
    • https://www.ktcart.co.in/uploaded_files/userfiles/files/coin-master-spins-free-2021_GM406889139.pdfIn PDF document text
    • https://www.ktcart.co.in/uploaded_files/userfiles/files/roblox-hack-slx_GM431946152.pdfIn PDF document text
    • https://www.ktcart.co.in/uploaded_files/userfiles/files/5-games-that-give-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_off000030ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30BA 22844 bytes
SHA-256: 61b928472b0534729ea67f61f54f47d2f310f32a8233e097e2ab919c9b70a990
font_01_sfnt_off00006452.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6452 19084 bytes
SHA-256: b3caed48fa7d71bbb8cf14a69f04045279388518a86ae49edb021c5e7669032d

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