Malicious PDF — malware analysis report

Static analysis result for SHA-256 c60a15d9452d0990…

MALICIOUS

PDF

39.4 KB Created: 2020-10-07 07:52:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 6c3539c6b2bc189d454c515ef6397d0b SHA-1: b3b54afadbd08bcd864f3c0c0a95983b8d4f3082 SHA-256: c60a15d9452d0990925f2f5c8b2c7677197a82701f557673e19990350cd387e6
124 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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/strik?keyword=manual+muscle+testing+shoulder In PDF document text
    • https://site-1043541.mozfiles.com/files/1043541/dinamafijebidigobe.pdfIn PDF document text
    • https://site-1036783.mozfiles.com/files/1036783/pumasidotazisagur.pdfIn PDF document text
    • https://site-1036852.mozfiles.com/files/1036852/newekovezeliv.pdfIn PDF document text
    • https://site-1037048.mozfiles.com/files/1037048/64700962392.pdfIn PDF document text
    • https://site-1039295.mozfiles.com/files/1039295/68327867726.pdfIn PDF document text
    • https://site-1038322.mozfiles.com/files/1038322/nivok.pdfIn PDF document text
    • https://site-1043098.mozfiles.com/files/1043098/zoxozenafofawejixakasaroz.pdfIn PDF document text
    • https://site-1041926.mozfiles.com/files/1041926/vorefa.pdfIn PDF document text
    • https://site-1039649.mozfiles.com/files/1039649/binumesutadaj.pdfIn PDF document text
    • https://site-1039784.mozfiles.com/files/1039784/20991338046.pdfIn PDF document text
    • https://site-1038468.mozfiles.com/files/1038468/1303081535.pdfIn PDF document text
    • https://site-1040221.mozfiles.com/files/1040221/29814531836.pdfIn PDF document text
    • https://site-1037261.mozfiles.com/files/1037261/33396928368.pdfIn PDF document text
    • http://files.myporos.com/uploads/1/3/2/7/132740285/205d83ceeb.pdfIn PDF document text
    • http://files.simplydelisheats.com/uploads/1/3/1/4/131437093/tubotugivojut.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005ea0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EA0 5356 bytes
SHA-256: a6177b6f93a84af8acfae904b7de5236dd867ca50837fe0899893e2427717d49
font_01_sfnt_off000070b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70B3 9512 bytes
SHA-256: 44b3b396b6bdbf833aee0747b4f60387f51067f043821797efd89c8830420477

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