Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5fafdc85988179a…

MALICIOUS

PDF

67.6 KB Created: 2021-02-20 23:37:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 8d60bd1727ade6cb95cc67d639383348 SHA-1: 94efdf2ce217325bd0b137c15c7d3a9b258d70cd SHA-256: c5fafdc85988179a90aebd2aa5cccda763e9c312e37c0943159f222b5f6b2a5f
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://jottigo.ru/aws?utm_term=how+to+open+waves+plugins+in+fl+studio PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4392650/normal_5fd899c5b2a17.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379971/normal_5feba37a1fd86.pdfIn PDF document text
    • https://foboxujegi.weebly.com/uploads/1/3/4/6/134694162/3928879.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453329/normal_5fce44e5c85ff.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4502698/normal_5fddf83c8e07e.pdfIn PDF document text
    • http://xiwogukonefem.iblogger.org/construction_line_logo_guidelines.pdfIn PDF document text
    • https://cdn.sqhk.co/sefibenip/fX5gfOF/shooting_archery_downhill.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371786/normal_60150d9c8bb1e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385633/normal_601d7d4f2a75e.pdfIn PDF document text
    • https://cdn.sqhk.co/sobexofap/hfHPhiK/my_horse_prince_ending.pdfIn PDF document text
    • https://cdn.sqhk.co/rogapakaler/cBjbMge/notodewovudu.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/ronenitevodo/iupac_nomenclature_practice_worksheets_class_11_cbse.pdfIn PDF document text
    • https://s3.amazonaws.com/goneduzum/compex_electrode_placement_guide.pdfIn PDF document text
    • http://gowegonuma.epizy.com/britax_boulevard_clicktight_convertible_car_seat_weight_limit.pdfIn PDF document text
    • http://beninoduvewer.epizy.com/61940519639.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_off0000cb33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB33 5224 bytes
SHA-256: 00dafebb04fabf3367d11619f0a94f8a3d38559d76ccd6735ec13f3b499a524e
font_01_sfnt_off0000dd2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD2C 10716 bytes
SHA-256: f7d065955259693853a42a4b9ecedef64aaa28a9b0662632ad889ed9cdbc2ace