Malicious PDF — malware analysis report

Static analysis result for SHA-256 c716cc8e7180a509…

MALICIOUS

PDF

65.9 KB Created: 2021-02-14 09:00:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 5c5a3b97a60a95b26519c21ba6828258 SHA-1: 9d5a33a4d2d62b45616c36250f45bdab40dba881 SHA-256: c716cc8e7180a509fbf5d50ab9d7e3f407e949efbc41ad68cb312536db1acbd8
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://druttle.ru/wix?keyword=sunjoy+octagonal+gazebo+instruction+manual PDF link annotation
    • https://cdn.sqhk.co/kufiremikaf/cibhceG/bopipuzobotijugisixes.pdfIn PDF document text
    • https://cdn.sqhk.co/jutalufelex/ji7oCij/hot_wheels_race_off_mod_menu.pdfIn PDF document text
    • http://bestita.space/logopazopitimibqgnrc.pdfIn PDF document text
    • http://immorta-cross1.club/banakhat_in_gujarati06dfk.pdfIn PDF document text
    • http://tiktokcopyrighthelpteam.com/the_mirage_of_social_justicewjipv.pdfIn PDF document text
    • https://cdn.sqhk.co/koditisalupe/fajexgg/nika_riots_storyboard.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412767/normal_601cb066728da.pdfIn PDF document text
    • http://sewaseg.22web.org/47686904634.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vagilamiporaw.epizy.com/symbolab_pro_apk_5._2._1.pdfIn PDF document text
    • http://baxolorojujore.rf.gd/budgeted_income_statement_excel_template.pdfIn PDF document text
    • https://s3.amazonaws.com/rabewiruzitewa/catering_services_project_report.pdfIn PDF document text
    • https://s3.amazonaws.com/pubopelej/ebola_virus_disease.pdfIn PDF document text
    • https://s3.amazonaws.com/tupofelasujewas/subtracting_similar_fractions_worksheets_grade_4.pdfIn PDF document text
    • https://s3.amazonaws.com/pajeriramal/bukipif.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_off0000c43a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC43A 5588 bytes
SHA-256: 720e302f5a14eb1406aef7ddc654411b0190a9c4487ba23a7e8a82e30806f28f
font_01_sfnt_off0000d73d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD73D 10356 bytes
SHA-256: d45390d7a8ad800d5515d2da803c0a5d6a471f9116d645402ba7b9c788fe5098