Malicious PDF — malware analysis report

Static analysis result for SHA-256 94410a7cad404aa4…

MALICIOUS

PDF

75.7 KB Created: 2021-02-24 13:30:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: d36cd8a5d71712f06a0c68715025a6bb SHA-1: 9c50bfaf80853450d6782678d5f00bb3c09c29a9 SHA-256: 94410a7cad404aa4bd12f1214396ec674e28a799b9d75649c1040c4e91a382a3
194 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
  • 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/123?utm_term=how+much+is+a+6+inch+blt+at+subway In PDF document text
    • https://static.s123-cdn-static.com/uploads/4481403/normal_5ff8c41b3ccac.pdfIn PDF document text
    • http://martakkord.ru/the_monkeys_paw_middle_schooljlvsz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405660/normal_60045098f1910.pdfIn PDF document text
    • https://cdn.sqhk.co/mezutorixo/iiYhbjp/cara_dune_black_series_amazon.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495531/normal_5fd2cf29a3b82.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489716/normal_5fedc7b586e69.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387411/normal_5fc75a9736146.pdfIn PDF document text
    • http://fomaxos.22web.org/formocresol_vs_calcium_hydroxide_in_pulpotomy.pdfIn PDF document text
    • http://hurricane1.space/ontological_coachingpytrk.pdfIn PDF document text
    • http://lnstagramverifiedbadge-media.com/punajin8p5to.pdfIn PDF document text
    • https://cdn.sqhk.co/foxoxaze/dujchiM/zojazokafabamijinaj.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mexexumekevuk.rf.gd/mutofodabozotik.pdfIn PDF document text
    • http://fonimegalidoxu.epizy.com/21850627506.pdfIn PDF document text
    • http://pudubekij.epizy.com/boriwomitigesukinobe.pdfIn PDF document text
    • http://titomozuluvexov.epizy.com/count_unique_values_google_sheets.pdfIn PDF document text
    • http://petikeb.rf.gd/wirepujusimiriremoxovu.pdfIn PDF document text
    • http://wuzuzifo.epizy.com/monarch_lathe_manual.pdfIn PDF document text
    • http://nobitinajed.epizy.com/what_gear_should_i_use_on_my_bike_going_uphill.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_off0000e84c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE84C 5392 bytes
SHA-256: 1b70f63a688fb31b65e3edfe00ab15c96ed8fe29743b1db4672a9eafa50708a9
font_01_sfnt_off0000fa95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA95 11624 bytes
SHA-256: ae0a03aa0ef1649bb77cca5aff9f21b01221f24d7bec052608319ce680efa07b