Malicious PDF — malware analysis report

Static analysis result for SHA-256 fae128343e678c5d…

MALICIOUS

PDF

34.8 KB Created: 2021-06-21 14:34:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 1e806049e7eca0a6351faef3e339b3fa SHA-1: 98c47855e617b9cf11f0c5bf70a57759c967d12d SHA-256: fae128343e678c5d270fcef7fe2e11be069752f670ad1e2269c72617ed1acffd
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a known malicious redirector infrastructure, specifically advertising 'free generator / game hack' lures for popular games like Roblox. The document body and embedded URLs strongly suggest a phishing or scam attempt to trick users into visiting malicious sites. While no scripts were extracted, the presence of malicious links and the lure indicate a high likelihood of further malicious activity, such as credential harvesting or malware delivery.

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/roblox-redeem-game-hack In PDF document text
    • https://brooklandsfarmparents.co.uk/admin/ckfinder/userfiles/files/john-doe-roblox-hacker_GM431946152.pdfIn PDF document text
    • https://brooklandsfarmparents.co.uk/admin/ckfinder/userfiles/files/admin-free-download-roblox_GM431946152.pdfIn PDF document text
    • https://brooklandsfarmparents.co.uk/admin/ckfinder/userfiles/files/get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • https://brooklandsfarmparents.co.uk/admin/ckfinder/userfiles/files/how-do-u-get-free-robux_GM431946152.pdfIn PDF document text
    • https://brooklandsfarmparents.co.uk/admin/ckfinder/userfiles/files/minecraft-games-to-play-for-free_GM479516143.pdfIn PDF document text
    • https://brooklandsfarmparents.co.uk/admin/ckfinder/userfiles/files/robuxab-top-free-robux_GM431946152.pdfIn PDF document text
    • https://brooklandsfarmparents.co.uk/admin/ckfinder/userfiles/files/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://brooklandsfarmparents.co.uk/admin/ckfinder/userfiles/files/promo-codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://brooklandsfarmparents.co.uk/admin/ckfinder/userfiles/files/easy-robux-generator_GM431946152.pdfIn PDF document text
    • https://brooklandsfarmparents.co.uk/admin/ckfinder/userfiles/files/coin-master-daily-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • https://brooklandsfarmparents.co.uk/admin/ckfinder/userfiles/files/can-you-give-me-free-robux_GM431946152.pdfIn PDF document text
    • https://brooklandsfarmparents.co.uk/admin/ckfinder/userfiles/files/coin-master-hack-apk-android-1_GM406889139.pdfIn PDF document text
    • https://brooklandsfarmparents.co.uk/admin/ckfinder/userfiles/files/roblox-4all-cool-free_GM431946152.pdfIn PDF document text
    • https://brooklandsfarmparents.co.uk/admin/ckfinder/userfiles/files/free-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • https://brooklandsfarmparents.co.uk/admin/ckfinder/userfiles/files/free-robux-no-apps_GM431946152.pdfIn PDF document text
    • https://brooklandsfarmparents.co.uk/admin/ckfinder/userfiles/files/how-to-make-a-private-server-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://brooklandsfarmparents.co.uk/admin/ckfinder/userfiles/files/best-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • https://brooklandsfarmparents.co.uk/admin/ckfinder/userfiles/files/free-spins-coin-master-unlimited_GM406889139.pdfIn PDF document text
    • https://brooklandsfarmparents.co.uk/admin/ckfinder/userfiles/files/minecraft-free_GM479516143.pdfIn PDF document text
    • https://brooklandsfarmparents.co.uk/admin/ckfinder/userfiles/files/roblox-group-free-robux_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_off00003169.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3169 22456 bytes
SHA-256: 32120490b19b1c08b95bd5539bdbac9a589a5a61b28297660dd18c67bd914e6a
font_01_sfnt_off0000632e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x632E 18920 bytes
SHA-256: 721f1418db0207db5e30cf5eb76aaee4d6cbf0bc02f818d2b22ecda722c598d4

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