Malicious PDF — malware analysis report

Static analysis result for SHA-256 43cc44b861d5bf29…

MALICIOUS

PDF

34.8 KB Created: 2021-06-25 19:01:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: ed6178bc07fec69afb9d1699b5f110a3 SHA-1: 5806cc9e329b5b9f945653738a83b31a070b8265 SHA-256: 43cc44b861d5bf290ee54f5f48c957b9912e68bfb3ae8848b35067843b9bad49
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links pointing to known malicious redirector infrastructure, specifically http://netcdn.co/app/431946152/why-don't-we-get-free-robux-game-hack. The document body and extracted URLs suggest a lure related to free game currency or hacks, a common social engineering tactic. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/why-don In PDF document text
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/ben-toys-and-games-free-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/coin-master-hack-mod-apk-free-download_GM406889139.pdfIn PDF document text
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/how-to-get-free-robux-in-2021_GM431946152.pdfIn PDF document text
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/twitter-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/dragon-ball-x-in-roblox-hack-pastebin_GM431946152.pdfIn PDF document text
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/how-to-hack-anyone-on-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/free-resources-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/free-robux-hack-on-computer_GM431946152.pdfIn PDF document text
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/free-tiktok-followers-no-human-verification-or-survey-2021_GM835599320.pdfIn PDF document text
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/how-to-get-free-girl-clothes-on-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/actual-ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/free-robux-only-1-step-no-human-verification_GM431946152.pdfIn PDF document text
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/de-roblox-hack-de_GM431946152.pdfIn PDF document text
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/how-to-get-faces-that-cost-robux-in-roblox-free_GM431946152.pdfIn PDF document text
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/coin-master-daily-free-spin-app_GM406889139.pdfIn PDF document text
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/synapse-roblox-hack-price_GM431946152.pdfIn PDF document text
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/how-to-get-free-robux-by-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/free-roblox-scams_GM431946152.pdfIn PDF document text
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/black-tank-top-roblox-free_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_off00002fc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FC5 22204 bytes
SHA-256: cf1bd1cd4c1b76b683cf87dfb55be7c5fca64d08c5216bcf8e5628b5196a775a
font_01_sfnt_off0000611e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x611E 19596 bytes
SHA-256: 68fdc3a6a0375b0192ef989b28987d3a7910eb722ddf2fc947b94f409f7b6097

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