Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c0cbd4dbdc3f0a6…

MALICIOUS

PDF

41.2 KB Created: 2021-05-01 16:03:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 130afe43af6afd46ce9f2db943285009 SHA-1: 7dfe5b6eb95a17c3fc7c9a17e5fddd28eb076454 SHA-256: 1c0cbd4dbdc3f0a62bcda55393984f7dcdf2109d1fa20c1098483dab0a2a401e
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, disguised with lures related to 'free Robux' and game hacks. The document body and embedded URLs reinforce this theme, suggesting the primary goal is to direct the user to a malicious site. No scripts were extracted, but the presence of embedded URLs and the malicious redirector heuristic strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9941

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/431946152/roblox.com-free-robux-obby-game-hack In PDF document text
    • https://distribuidorademoveis.com.br/ckfinder/userfiles/files/add-robux-to-account-for-free.pdfIn PDF document text
    • https://distribuidorademoveis.com.br/ckfinder/userfiles/files/how-to-hack-free-robux-websites.pdfIn PDF document text
    • https://distribuidorademoveis.com.br/ckfinder/userfiles/files/free-robux-generator-with-no-survey.pdfIn PDF document text
    • https://distribuidorademoveis.com.br/ckfinder/userfiles/files/legit-free-robux-2021.pdfIn PDF document text
    • https://distribuidorademoveis.com.br/ckfinder/userfiles/files/mega-hack-download-roblox.pdfIn PDF document text
    • https://distribuidorademoveis.com.br/ckfinder/userfiles/files/free-robux-codes-october-2021.pdfIn PDF document text
    • https://distribuidorademoveis.com.br/ckfinder/userfiles/files/how-do-you-get-free-robux-without-human-verification.pdfIn PDF document text
    • https://distribuidorademoveis.com.br/ckfinder/userfiles/files/roblox-account-hack-2021-works-next-video-with-proof.pdfIn PDF document text
    • https://distribuidorademoveis.com.br/ckfinder/userfiles/files/how-to-get-free-godly-roblox-exploit.pdfIn PDF document text
    • https://distribuidorademoveis.com.br/ckfinder/userfiles/files/robux-hack-free-robux.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 3

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
stream_003_off000044d9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x44D9 25352 bytes
SHA-256: b5ad61405d6eb895969c5f1e1dc100ad56fed0df8df3163e4e1b57b48ca7a568
font_01_sfnt_off00007eb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EB5 18592 bytes
SHA-256: e190ab1e7a9f9c973c55efbc69f363ec310643d30a499f6621420a1ebd73911f

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