Malicious PDF — malware analysis report

Static analysis result for SHA-256 e614c70266f46bf2…

MALICIOUS

PDF

34.2 KB Created: 2021-06-20 06:42:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: bece46891874dfa474013ca147add393 SHA-1: d5a3e5e27c758536ce5963b6c14437fefbaecaa5 SHA-256: e614c70266f46bf2ed4db4526322dfb4a79772af8e0bb0b7f8644f8ce2e9b470
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links, including one to a known malicious redirector at http://netcdn.co/app/406889139/free-spins-and-coins-coin-master-game-hack. The document body and heuristics indicate a lure for game hacks or currency, suggesting a phishing or scam attempt. No scripts were extracted, but the presence of malicious redirectors and the lure strongly indicate a malicious intent to lead the user to further compromised sites.

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/406889139/free-spins-and-coins-coin-master-game-hack In PDF document text
    • https://www.lwctrust.co.uk/admin/ckfinder/userfiles/files/blox-supply-free-robux_GM431946152.pdfIn PDF document text
    • https://www.lwctrust.co.uk/admin/ckfinder/userfiles/files/free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • https://www.lwctrust.co.uk/admin/ckfinder/userfiles/files/free-robux-apk_GM431946152.pdfIn PDF document text
    • https://www.lwctrust.co.uk/admin/ckfinder/userfiles/files/coin-master-free-2021-spin-link-today_GM406889139.pdfIn PDF document text
    • https://www.lwctrust.co.uk/admin/ckfinder/userfiles/files/minecraft-hacked-client-download_GM479516143.pdfIn PDF document text
    • https://www.lwctrust.co.uk/admin/ckfinder/userfiles/files/how-to-get-free-robux-2021-new_GM431946152.pdfIn PDF document text
    • https://www.lwctrust.co.uk/admin/ckfinder/userfiles/files/tiktok-free-cuthbert_GM835599320.pdfIn PDF document text
    • https://www.lwctrust.co.uk/admin/ckfinder/userfiles/files/minecraft-pe-free_GM479516143.pdfIn PDF document text
    • https://www.lwctrust.co.uk/admin/ckfinder/userfiles/files/how-do-you-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • https://www.lwctrust.co.uk/admin/ckfinder/userfiles/files/roblox-hacks-for-mac_GM431946152.pdfIn PDF document text
    • https://www.lwctrust.co.uk/admin/ckfinder/userfiles/files/robux-earner_GM431946152.pdfIn PDF document text
    • https://www.lwctrust.co.uk/admin/ckfinder/userfiles/files/free-roblox-generator-for-roblox_GM431946152.pdfIn PDF document text
    • https://www.lwctrust.co.uk/admin/ckfinder/userfiles/files/coin-master-free-spins-and-coins-daily-links_GM406889139.pdfIn PDF document text
    • https://www.lwctrust.co.uk/admin/ckfinder/userfiles/files/coin-master-hack-without-downloading-apps_GM406889139.pdfIn PDF document text
    • https://www.lwctrust.co.uk/admin/ckfinder/userfiles/files/roblox-free-robux-and-tix_GM431946152.pdfIn PDF document text
    • https://www.lwctrust.co.uk/admin/ckfinder/userfiles/files/roblox-speed-hacks-free_GM431946152.pdfIn PDF document text
    • https://www.lwctrust.co.uk/admin/ckfinder/userfiles/files/doj-paleto-bay-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://www.lwctrust.co.uk/admin/ckfinder/userfiles/files/roblox-2021-hack_GM431946152.pdfIn PDF document text
    • https://www.lwctrust.co.uk/admin/ckfinder/userfiles/files/how-to-get-free-brown-hair-in-roblox_GM431946152.pdfIn PDF document text
    • https://www.lwctrust.co.uk/admin/ckfinder/userfiles/files/free-vip-roblox_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_off00002ffe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FFE 22684 bytes
SHA-256: a3859d96a8c9495e2674890c2ceb75e55704eb5630b268426e529f5c45136ca7
font_01_sfnt_off000062af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62AF 18348 bytes
SHA-256: e3514f5c13c59f74fe131b320bb4a7a21799b0fccf5b53c141d50f68870e844d

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