Malicious PDF — malware analysis report

Static analysis result for SHA-256 cca7e7815ebf5a29…

MALICIOUS

PDF

82.6 KB Created: 2020-09-28 17:30:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0127de3367fcfa21b011710f7db88556 SHA-1: 6802b8e890e7d68be23468e515ea14260822c782 SHA-256: cca7e7815ebf5a2987bbf0d91773416d4e49c9aaae20036a9c29f4f43e6e7c40
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing indicating a malicious redirector link. The embedded URL, 'https://gettraff.ru/mozel?keyword=atila+rey+de+los+hunos+pdf', is likely used to redirect the user to a malicious site. The document body, though heavily obfuscated, contains references to the URL, reinforcing its role in the attack. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 2

  • 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.
  • 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://gettraff.ru/mozel?keyword=atila+rey+de+los+hunos+pdf
    • https://site-1037233.mozfiles.com/files/1037233/19830678617.pdf
    • https://site-1036884.mozfiles.com/files/1036884/pebazegelisametozu.pdf
    • https://site-1037163.mozfiles.com/files/1037163/85690912880.pdf
    • https://site-1036649.mozfiles.com/files/1036649/73158526604.pdf
    • https://site-1036693.mozfiles.com/files/1036693/57655026615.pdf
    • https://site-1037122.mozfiles.com/files/1037122/bepawitexut.pdf
    • https://site-1037129.mozfiles.com/files/1037129/dufemekak.pdf
    • https://site-1036621.mozfiles.com/files/1036621/6116835788.pdf
    • https://site-1036828.mozfiles.com/files/1036828/38825161217.pdf
    • https://site-1036851.mozfiles.com/files/1036851/51830502192.pdf
    • https://site-1037091.mozfiles.com/files/1037091/97316783936.pdf
    • https://site-1036881.mozfiles.com/files/1036881/3172003753.pdf
    • https://site-1036818.mozfiles.com/files/1036818/67095686183.pdf
    • https://cdn.shopify.com/s/files/1/0434/0475/5096/files/vomurusem.pdf
    • https://cdn.shopify.com/s/files/1/0435/7950/6847/files/imperial_carnival_glass_identificati.pdf
    • https://cdn.shopify.com/s/files/1/0433/5314/5495/files/bertrand_model_of_duopoly.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010413.bin
74f54bf4d7ff6ddd89a23463bab574330da1cab5132387f347d4245d4db198cb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10413 5220 bytes
font_01_sfnt_off000115da.bin
5eff5581e12c8a3b744c0c5d12e63b8d7209fda85750bc78c57614fd6a407ea4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x115DA 11688 bytes

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