Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce103759c020da06…

MALICIOUS

PDF

76.1 KB Created: 2021-02-19 18:46:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 54b7e7cc40279588d44b8eaff4660f5a SHA-1: 344c54402ed20187a185195bc3d5c3f3bd8f0e7f SHA-256: ce103759c020da06c9090117db3bf8a23b0142930102d7adec3e94e3d8e60a28
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://seumenha.ru/123?utm_term=high+school+dxd+light+novel+vol+11 PDF link annotation
    • http://idealicaitalia.website/bawew8obm6.pdfIn PDF document text
    • http://logoped-samara.ru/wadaxuzodazisasovokijag7exh.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490273/normal_5fe633d6d8c9a.pdfIn PDF document text
    • https://bodovusinorone.weebly.com/uploads/1/3/5/3/135347185/ed44c68.pdfIn PDF document text
    • https://sudarixadozitot.weebly.com/uploads/1/3/5/3/135331315/84d6c17a73678f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479451/normal_6026332477f32.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485939/normal_6015816d7096b.pdfIn PDF document text
    • http://dehydratedoriginalgoodness.com/nurigalunujatipurcif9t.pdfIn PDF document text
    • http://xepivutede.22web.org/blacksmithing_projects.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424026/normal_5fd3521e2e1f7.pdfIn PDF document text
    • http://reduslimitaly-official.website/waxepilesosewor3ud1n.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/somisilegex/46803763034.pdfIn PDF document text
    • http://kefasakawig.rf.gd/free_printable_coloring_sheet_unicorn.pdfIn PDF document text
    • https://s3.amazonaws.com/wovugi/union_budget_2019_in_tamil.pdfIn PDF document text
    • https://s3.amazonaws.com/farefasejikap/xozinaf.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_off0000ec13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC13 5036 bytes
SHA-256: e7f566e339de5ec2039616cb635b13fe5e73ecbdd8ffba8f864240c7b5d470f7
font_01_sfnt_off0000fd48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD48 11420 bytes
SHA-256: c6cf0cc1e9c49bcaf32345cebddb322cc683bf6780eb879c11494597afc3854b