Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0cbc05c9eca716e…

MALICIOUS

PDF

41.8 KB Created: 2021-05-11 07:10:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 6c482f10927b03e306e4494df308691a SHA-1: 95092d0c8cf4de6fae92a17c80af0a4c32387a48 SHA-256: f0cbc05c9eca716e8ee676f87f15a4acb6acd0b0d67ba76063411087f4d0fcb9
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to known malicious infrastructure, specifically `https://netcdn.xyz/app/479516143/1.14-4-hacks-game-hack`. The presence of a visual download button and the ML classifier's high confidence score further indicate malicious intent. The document likely serves as a lure to download further malicious content or redirect to a phishing site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 3

  • 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 https://netcdn.xyz/app/479516143/1.14-4-hacks-game-hack In PDF document text
    • http://stikespantirapih.ac.id/home/repository/coins-master_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/i-need-robux_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/minecraft-free-app_GM479516143.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-minecraft-account-and-password-generator_GM479516143.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-robux-wheel_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/robux-generator-no-survey_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/80-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-spins-coin-master-app_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/coin-master-free-shield-link_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-roblox-accounts-with-robux_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/watch-ads-for-robux_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/give-me-robux-now_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/hack-coin-master-apk-2021_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-robux-easy-and-fast_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/minecraft-free-download-no-virus_GM479516143.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-roblox-generator-for-roblox_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/how-to-get-minecraft-bedrock-for-free_GM479516143.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/coin-master-free-daily-spins-and-coins_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
stream_003_off00004a5d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A5D 25008 bytes
SHA-256: 3fd3f8348fdd5f824c3ae81c60578f229e93cfc97b6c2b4cda570689c90491c0
font_01_sfnt_off000082aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82AA 17748 bytes
SHA-256: 5c222ee3790d6988dab7730242936a3e132ec412c073a5d6db7623f4f1192a81

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