Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6d61d19b528b60d…

MALICIOUS

PDF

68.5 KB Created: 2021-02-24 17:37:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 7ed399709138ad1bef9fbc240d25ee6a SHA-1: 3844dd0c8c0c06a942477c9911067e80ed98f453 SHA-256: f6d61d19b528b60d463897aba9ce45de76108541b259f335aca25bac697a55e8
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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.
  • 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.
  • 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://crophysi.ru/wix?keyword=geometry+chapter+6+test+answers+key In PDF document text
    • https://static.s123-cdn-static.com/uploads/4478131/normal_5ff13db786afa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388158/normal_602be84566a66.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501206/normal_5feceff01eb26.pdfIn PDF document text
    • http://phrensy.co/minecraft_island_seed_1.15bovy9.pdfIn PDF document text
    • http://bet-info.ru/116070142801ca8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404123/normal_60079084e65a7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378856/normal_5feb94fe646e7.pdfIn PDF document text
    • http://batut.space/wexamavumerefasapefoduwo8ldeo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372399/normal_6000bde39d4b7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443802/normal_5fcdd59a4d7aa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378383/normal_6033806156334.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405437/normal_5fde1f228aa08.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415768/normal_5ff1caae15959.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420025/normal_6022bc906ca8a.pdfIn PDF document text
    • http://tk-pobeda.site/dubakituvipaxjbrjj.pdfIn PDF document text
    • http://pokupka.space/georgia_drivers_license_requirements_for_adultsdqkn9.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/fulosobezur/23927690307.pdfIn PDF document text
    • https://s3.amazonaws.com/salosibejodod/dofopuwogotanusewumufefos.pdfIn PDF document text
    • http://fomudugeriju.epizy.com/pamoraridomuxixaniz.pdfIn PDF document text
    • https://s3.amazonaws.com/zalomi/consolidated_edison_annual_report_2016.pdfIn PDF document text
    • https://s3.amazonaws.com/bodajaku/96415377147.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_off0000ccfb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCFB 5584 bytes
SHA-256: d037901b0a19ac8b6483208d3eb007309bf0dbd99925b0e454b82a50d5afe1a7
font_01_sfnt_off0000dfe6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFE6 10692 bytes
SHA-256: 7ab6d0fd667f5a1ff4ee40d0a6fed37903fb3408d3a2e9992b35b4ae14d3bf6c