Malicious PDF — malware analysis report

Static analysis result for SHA-256 5bc734d15a083a88…

MALICIOUS

PDF

40.1 KB Created: 2020-10-13 12:49:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 83d4fa69ba764ddbd732c54e33425ef7 SHA-1: 604e94f60fb6b2243416f28b80e71a5a4d3bb4dd SHA-256: 5bc734d15a083a882b6fe7f0e7104c3dc833ed1c84b1deb63a7342f1c0819263
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=uud+1945+amandemen+ke+4+lengkap+pdf In PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/nojof.pdfIn PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/xekena.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/fesixukorupu.pdfIn PDF document text
    • https://site-1043607.mozfiles.com/files/1043607/mamobusotub.pdfIn PDF document text
    • https://site-1043034.mozfiles.com/files/1043034/fofadowafolepaxof.pdfIn PDF document text
    • https://jatorogerujew.weebly.com/uploads/1/3/2/7/132710569/a63fb.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/velowo_dakemolaku.pdfIn PDF document text
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/kizerapu.pdfIn PDF document text
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/rotizizalipi-xulejowo-wegevok-xutijub.pdfIn PDF document text
    • https://site-1041949.mozfiles.com/files/1041949/kurununedepob.pdfIn PDF document text
    • https://site-1036977.mozfiles.com/files/1036977/jenurubesamesanatevafu.pdfIn PDF document text
    • https://site-1048219.mozfiles.com/files/1048219/zinedapupol.pdfIn PDF document text
    • https://site-1043938.mozfiles.com/files/1043938/pamasidiz.pdfIn PDF document text
    • https://site-1038358.mozfiles.com/files/1038358/78630639777.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_off00005d9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D9D 5564 bytes
SHA-256: 780f8df8884e33012e5f4cb020046a6a3adb72ccc95768b7e33cf911174b44b6
font_01_sfnt_off00007089.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7089 10308 bytes
SHA-256: b2cb7a8c29f2f9c79b2a1100df35e1630e1cc778623c5f956cb0560c40378b4c

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