Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7d13ec30e5244db…

MALICIOUS

PDF

68.5 KB Created: 2021-02-17 10:40:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 61449a5027288d32794911827ffb80c5 SHA-1: 394e3c864bba55c9e9770f215a9ad6b77fb3a634 SHA-256: c7d13ec30e5244dbd9c2948c883794092274edf07a1bdefabff6279c2fa37f03
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://seumenha.ru/wix?keyword=deborah+norville+yarn+patterns PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4374699/normal_602477bf1b156.pdfIn PDF document text
    • https://kerobasoxegetun.weebly.com/uploads/1/3/4/0/134017970/9ed9cf9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383795/normal_5febfee35c64f.pdfIn PDF document text
    • http://clientesdkb.com/how_to_find_p_value_from_t_distribution_tablewkwhv.pdfIn PDF document text
    • https://visameme.weebly.com/uploads/1/3/1/6/131636817/9789771.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370778/normal_5fec36937e71d.pdfIn PDF document text
    • http://digitaltoolsfor.xyz/mubikemamobufovowaqhhi5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413976/normal_601b7b1bc9a9f.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/tutasujal/how_do_you_write_a_good_career_development_plan_for_yourself.pdfIn PDF document text
    • http://sufazomewugexu.epizy.com/neoplasia_de_prstata.pdfIn PDF document text
    • https://s3.amazonaws.com/naxozelozude/cdsbc_annual_report.pdfIn PDF document text
    • http://jaziwovapotulit.epizy.com/85481074024.pdfIn PDF document text
    • http://giduzorim.epizy.com/nstemi_unstable_angina_guidelines.pdfIn PDF document text
    • http://risumipekalur.rf.gd/budgeting_template_for_pages.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_off0000cf8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF8C 5208 bytes
SHA-256: 499541f36f12f04f0e1d4fbbb755e765d89a6bd1de25b97cb2764e41adea39f0
font_01_sfnt_off0000e144.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE144 10496 bytes
SHA-256: 4726b22e57cf04c98214dbb1acdb7f9d41ca0d4a5ebfd3b933eb889cea885ba2