Malicious PDF — malware analysis report

Static analysis result for SHA-256 531cd9d4ca668e60…

MALICIOUS

PDF

65.6 KB Created: 2021-03-02 11:10:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 1f0c205281880a6241fbb9b9a71a4a78 SHA-1: 5db051d974216d5a60660e2027b939b1547400f3 SHA-256: 531cd9d4ca668e604e4c89a6315205dd1612b51d644331c47e7bde4988203105
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://fokemale.ru/award?keyword=visual+studio+2015+freezes+when+editing PDF link annotation
    • http://fisujerekuvij.getenjoyment.net/kenmore_700_series_washer_spin_problems.pdfIn PDF document text
    • http://kolagozisil.mywebcommunity.org/38671283356.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366628/normal_60345d069ebdf.pdfIn PDF document text
    • http://promoocaoameericanas.com/how_to_use_thermador_professional_ovenwjfc4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484358/normal_600537994bfbb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://satawakerexe.atwebpages.com/element_40_inch_roku_tv_review.pdfIn PDF document text
    • https://s3.amazonaws.com/nisiwanolom/67443797191.pdfIn PDF document text
    • https://s3.amazonaws.com/gujutavevive/kafosatajoregutepezirux.pdfIn PDF document text
    • https://s3.amazonaws.com/gavexilatuvitaz/90638834750.pdfIn PDF document text
    • https://s3.amazonaws.com/gumegulaxi/eiffel_tower_wallpaper_free.pdfIn PDF document text
    • https://s3.amazonaws.com/pevarijidasalop/algebra_equations_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/guxosa/acdsee_pro_5_free.pdfIn PDF document text
    • https://s3.amazonaws.com/nademopor/28711159556.pdfIn PDF document text
    • https://s3.amazonaws.com/datarofapakil/modern_management_theories_ppt.pdfIn PDF document text
    • https://s3.amazonaws.com/kozibowisenatu/82249302742.pdfIn PDF document text
    • https://s3.amazonaws.com/dazuxujepov/photoshop_for_windows_7_full_version.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_off0000c370.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC370 5728 bytes
SHA-256: 30b55b2124b6ecef490a568cee847300c038786d3196d3a8e71fbfbd7563b951
font_01_sfnt_off0000d713.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD713 10064 bytes
SHA-256: d79977d329f2cb10f256c9123edc178162b861842c485d9be69ef804e990c610