Malicious PDF — malware analysis report

Static analysis result for SHA-256 c142457fce4d7a1a…

MALICIOUS

PDF

33.9 KB Created: 2021-06-24 01:43:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: b7b4a7321a24adeb58dc8c276bba35ae SHA-1: a1f88beff5d41667605950a6feeb9f6ce2adeb88 SHA-256: c142457fce4d7a1a63e58ce32d1d4b30c9e8b5bec544aed596913a0aa15206b3
168 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links, including one to a known malicious redirector infrastructure at http://netcdn.co/app/479516143/how-to-get-minecraft-for-free-on-nintendo-switch-game-hack. The document body and heuristics indicate a lure for free game items or hacks, likely intended to lead users to a phishing or malware download site. No scripts were extracted from this sample, but the embedded URLs are the primary indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/479516143/how-to-get-minecraft-for-free-on-nintendo-switch-game-hack In PDF document text
    • https://www.hagleygolfclub.com/admin/ckfinder/userfiles/files/coin-master-daily-free-spin-and-coin-link_GM406889139.pdfIn PDF document text
    • https://www.hagleygolfclub.com/admin/ckfinder/userfiles/files/free-robux-come_GM431946152.pdfIn PDF document text
    • https://www.hagleygolfclub.com/admin/ckfinder/userfiles/files/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.hagleygolfclub.com/admin/ckfinder/userfiles/files/minecraft-free-play-now_GM479516143.pdfIn PDF document text
    • https://www.hagleygolfclub.com/admin/ckfinder/userfiles/files/free-minecraft-for-kids_GM479516143.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/roblox-group-free-robux_GM431946152.pdfIn PDF document text
    • https://www.hagleygolfclub.com/admin/ckfinder/userfiles/files/free-roblox-hair-to-wear_GM431946152.pdfIn PDF document text
    • https://www.hagleygolfclub.com/admin/ckfinder/userfiles/files/free-downloads-for-coin-master-daily-rewards_GM406889139.pdfIn PDF document text
    • https://www.hagleygolfclub.com/admin/ckfinder/userfiles/files/how-to-get-minecraft-bedrock-edition-for-free_GM479516143.pdfIn PDF document text
    • https://www.hagleygolfclub.com/admin/ckfinder/userfiles/files/coin-master-free-spins-and-coins-app_GM406889139.pdfIn PDF document text
    • https://www.hagleygolfclub.com/admin/ckfinder/userfiles/files/coins-master-hack_GM406889139.pdfIn PDF document text
    • https://www.hagleygolfclub.com/admin/ckfinder/userfiles/files/get-gold-coin-master-village-hack_GM406889139.pdfIn PDF document text
    • https://www.hagleygolfclub.com/admin/ckfinder/userfiles/files/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.hagleygolfclub.com/admin/ckfinder/userfiles/files/roblox-survey-for-robux_GM431946152.pdfIn PDF document text
    • https://www.hagleygolfclub.com/admin/ckfinder/userfiles/files/free-spin-coin-master-app-download_GM406889139.pdfIn PDF document text
    • https://www.hagleygolfclub.com/admin/ckfinder/userfiles/files/how-to-download-minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
    • https://www.hagleygolfclub.com/admin/ckfinder/userfiles/files/free-minecraft-java-edition-codes_GM479516143.pdfIn PDF document text
    • https://www.hagleygolfclub.com/admin/ckfinder/userfiles/files/robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://www.hagleygolfclub.com/admin/ckfinder/userfiles/files/uprobuxcom-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_off0000309f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x309F 22112 bytes
SHA-256: 8ffa54d0bb92a10345ebf2639ebf7bd28f1dd81e162aff679a50821268fdfd2e
font_01_sfnt_off00006138.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6138 18504 bytes
SHA-256: 8af0a249c3c3e9a25bb13285b95d7887f867d932d2951fe3703759752fb28dcf

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