Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3599bb23b98d2fc…

MALICIOUS

PDF

83.6 KB Created: 2021-02-21 23:14:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 9441abea9b350a8d297341e8adad6c07 SHA-1: b4f3df091c816da4409144fee28c975ba98f287b SHA-256: a3599bb23b98d2fc9431836ee386438732376171aa815a8d75d6194c2eb66935
136 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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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/wix?keyword=mid+atlantic+colonies+economic+activities PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4414873/normal_5fecf3b7004e5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471252/normal_5ff7e243f220e.pdfIn PDF document text
    • http://xagowawusik.66ghz.com/54069634210.pdfIn PDF document text
    • http://monetobo.iblogger.org/journey_builder_templates.pdfIn PDF document text
    • http://moymagazin.xyz/what_does_ff_mean_on_a_sunbeam_electric_blanket61q3r.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481271/normal_5fe234b3898fc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379240/normal_5fe2c62f6b5c0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391954/normal_602f469a978b8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426822/normal_601df3f8cb4a6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464052/normal_60209fd0ce615.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459170/normal_601eea5ae71c9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366007/normal_6023d4ecb0d82.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4492593/normal_5fde8aa0bdf20.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nasewuji.epizy.com/vatipufedudezimobuvelenus.pdfIn PDF document text
    • http://fajanelumaj.epizy.com/avast_crack_license_key.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_off00010d3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D3E 5052 bytes
SHA-256: 13f8e025077a072aa40a77270c22858f7fe833a5b770f64a51997631a06e17c2
font_01_sfnt_off00011e6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E6F 10284 bytes
SHA-256: bcfbd8795a81c4ccfb7717de40a6a3873ad13419d1c0cef1d818014ab3f84ba6