Malicious PDF — malware analysis report

Static analysis result for SHA-256 a579f9b189f5cb4b…

MALICIOUS

PDF

74.1 KB Created: 2021-03-02 16:11:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 17461b9f8a3be800d27a90e2071f0f30 SHA-1: 9c40b9be3013156a56b22fc566149cb583766926 SHA-256: a579f9b189f5cb4bb7a4fa04894606dd62abdf6d43cc7b7fb56c8a47ff0e4412
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://ponafet.ru/strik?utm_term=mfc-7860dw+scan+driver PDF link annotation
    • http://whitetwo.space/guidelines_for_landfill_disposal_of_sulphur_waste2156m.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387933/normal_6008f29c90234.pdfIn PDF document text
    • https://cdn.sqhk.co/nulegudup/njehcjd/dusakutawakatojogojinus.pdfIn PDF document text
    • http://vivadoctor.ru/download_twilight_full_movie_2008pnvf8.pdfIn PDF document text
    • https://cdn.sqhk.co/dijexovesaf/4KmjbiN/skulduggery_meaning_in_tamil.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375517/normal_5fe778ccba963.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375351/normal_6033c89f1a749.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380392/normal_602b599b763a8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461481/normal_600a598dab1f5.pdfIn PDF document text
    • http://affilateapp.online/9539543524cbsxc.pdfIn PDF document text
    • https://cdn.sqhk.co/velabolo/hjlL0ec/connie_walker_pac.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381737/normal_5fc73a876a7af.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/zikeko/ap_vehicle_information_app.pdfIn PDF document text
    • https://s3.amazonaws.com/mubemutolewe/latest_update_for_iphone_6.pdfIn PDF document text
    • https://s3.amazonaws.com/wiwamoxamo/11180823985.pdfIn PDF document text
    • https://s3.amazonaws.com/gumegulaxi/health_and_safety_officer_course_melbourne.pdfIn PDF document text
    • https://s3.amazonaws.com/veraxawewib/35208470756.pdfIn PDF document text
    • https://s3.amazonaws.com/zisulamisozoto/idsa_cap_guidelines_2018.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_off0000e3c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3C2 5740 bytes
SHA-256: 8c70a5a662a675efc1740c5a55fcf89648426a4007a0c91df61b1790051afc9b
font_01_sfnt_off0000f79a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF79A 10604 bytes
SHA-256: 59d96b7a84d429daa69f79ef737afd2fce59d0f11fe70593338da53dd8820efe