Malicious PDF — malware analysis report

Static analysis result for SHA-256 c496e86c0befc5ff…

MALICIOUS

PDF

33.8 KB Created: 2021-06-22 23:53:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 85636c6d5ce102d7088c8e1a8d1f82a6 SHA-1: fa393fe9754c6e9f5d7d8c5a5e6f60baaaa83f9c SHA-256: c496e86c0befc5fffc14474b9ab85a82e8b821e37f9ebc3eb61538c7dedd3dfd
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of free game currency and hacks to entice users to click on embedded links. The primary link, http://netcdn.co/app/431946152/free-robux-gen-game-hack, is identified as a malicious redirector. The document's structure and embedded links suggest it is part of a phishing campaign designed to lead users to potentially malicious websites. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • 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.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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-gen-game-hack In PDF document text
    • https://www.hagleygolfclub.com/admin/ckfinder/userfiles/files/working-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://www.hagleygolfclub.com/admin/ckfinder/userfiles/files/how-to-get-free-items-in-roblox-no-pastebin_GM431946152.pdfIn PDF document text
    • https://www.hagleygolfclub.com/admin/ckfinder/userfiles/files/daily-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.hagleygolfclub.com/admin/ckfinder/userfiles/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://www.hagleygolfclub.com/admin/ckfinder/userfiles/files/free-tiktok-accounts-and-passwords_GM835599320.pdfIn PDF document text
    • https://www.hagleygolfclub.com/admin/ckfinder/userfiles/files/robux-generator-2021_GM431946152.pdfIn PDF document text
    • https://www.hagleygolfclub.com/admin/ckfinder/userfiles/files/coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.hagleygolfclub.com/admin/ckfinder/userfiles/files/free-coins-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.hagleygolfclub.com/admin/ckfinder/userfiles/files/how-to-exploit-roblox_GM431946152.pdfIn PDF document text
    • https://www.hagleygolfclub.com/admin/ckfinder/userfiles/files/minecraft-download-free-download_GM479516143.pdfIn PDF document text
    • https://www.hagleygolfclub.com/admin/ckfinder/userfiles/files/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • https://www.hagleygolfclub.com/admin/ckfinder/userfiles/files/how-to-hack-coin-master-apple_GM406889139.pdfIn PDF document text
    • https://www.hagleygolfclub.com/admin/ckfinder/userfiles/files/how-to-hack-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • https://www.hagleygolfclub.com/admin/ckfinder/userfiles/files/free-coin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.hagleygolfclub.com/admin/ckfinder/userfiles/files/coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://www.hagleygolfclub.com/admin/ckfinder/userfiles/files/how-to-free-robux-pastebin_GM431946152.pdfIn PDF document text
    • https://www.hagleygolfclub.com/admin/ckfinder/userfiles/files/all-minecraft-handbooks_GM479516143.pdfIn PDF document text
    • https://www.hagleygolfclub.com/admin/ckfinder/userfiles/files/give-me-robux-now_GM431946152.pdfIn PDF document text
    • https://www.hagleygolfclub.com/admin/ckfinder/userfiles/files/how-to-hack-roblox-on-mobile_GM431946152.pdfIn PDF document text
    • https://www.hagleygolfclub.com/admin/ckfinder/userfiles/files/free-spins-coin-master-links_GM406889139.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_off00003062.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3062 21720 bytes
SHA-256: b1e4ae35db6f50a587263dc4d2321d0b571237a84064de49dc48f7ad3e41135c
font_01_sfnt_off00006022.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6022 18716 bytes
SHA-256: 241c7495b7b7869825a77847e0d47c1d78029990e0b32ebb48689777b4105741

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