Malicious PDF — malware analysis report

Static analysis result for SHA-256 29f6e544afce33d2…

MALICIOUS

PDF

48.0 KB Created: 2020-10-14 23:43:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 4623eb0e5c4092c2f18051d573f8dac0 SHA-1: 6510ac658e4d7f545d40c4d40b2f9f8276c67547 SHA-256: 29f6e544afce33d2b99ce9c0f37577f947442cd66026d60e30b62404343a2039
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://ggtraff.ru/strik?keyword=ridurre+dimensione+file+pdf+con+acrobat In PDF document text
    • https://site-1038647.mozfiles.com/files/1038647/forutunaxizekaxevubu.pdfIn PDF document text
    • https://site-1039873.mozfiles.com/files/1039873/xutiwovodike.pdfIn PDF document text
    • https://site-1037077.mozfiles.com/files/1037077/pebaluti.pdfIn PDF document text
    • https://site-1036941.mozfiles.com/files/1036941/38026257676.pdfIn PDF document text
    • https://site-1042101.mozfiles.com/files/1042101/gakonemedib.pdfIn PDF document text
    • https://site-1042444.mozfiles.com/files/1042444/61071205224.pdfIn PDF document text
    • https://site-1040099.mozfiles.com/files/1040099/17200016987.pdfIn PDF document text
    • https://site-1037240.mozfiles.com/files/1037240/30554554872.pdfIn PDF document text
    • https://site-1040610.mozfiles.com/files/1040610/92887422099.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366009/normal_5f8761028f64d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366388/normal_5f871de4b3630.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365545/normal_5f8704be73d2b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365626/normal_5f8751a8501e2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365540/normal_5f86f9528c647.pdfIn PDF document text
    • https://jawasolasazilem.weebly.com/uploads/1/3/1/3/131379174/gevoderovepiru.pdfIn PDF document text
    • https://nukevokisoget.weebly.com/uploads/1/3/2/7/132711970/8822636.pdfIn PDF document text
    • https://sesuwulot.weebly.com/uploads/1/3/1/4/131438847/1261948.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/filosom-lusiwikafese-jerupuxorukoti-novubolifunuw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366637/normal_5f875f26d36d5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367310/normal_5f8742303b5fd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366047/normal_5f871c1726e15.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366327/normal_5f873e789493c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/62432ec5-2cb7-4407-9c3e-24087230e266/givimojapasemagiz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f4ee1f3b-463e-4c6b-b3c9-e95313de3afd/wijoxifuxegedixosol.pdfIn 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_off00007ace.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7ACE 5448 bytes
SHA-256: bbc50ef1e77ccd84a2239cf6dd286bc2235b89d872269133148a547da4731033
font_01_sfnt_off00008d32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D32 10968 bytes
SHA-256: 620b341295dfd28cf7256b05cc9dbb94be5e79d940056f7bed48197e7c9b9466

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