Malicious PDF — malware analysis report

Static analysis result for SHA-256 4648a86be5209184…

MALICIOUS

PDF

72.4 KB Created: 2021-02-17 19:32:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 8f26ac3d5804d4a273a76c1e096b2f76 SHA-1: 76b3c3a5aaac6f85b179f13746840f530ff77c6c SHA-256: 4648a86be5209184c5f337fc42e040ef121fe5e816a08e72f29383ec6215e358
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=godaddy+renewal+coupon+code+india In PDF document text
    • https://static.s123-cdn-static.com/uploads/4489429/normal_5fc6158211706.pdfIn PDF document text
    • https://cdn.sqhk.co/detaludolef/jifjcBo/mr_scruff_ninja_tuna_download.pdfIn PDF document text
    • https://cdn.sqhk.co/gisusisabez/gjZgege/naterajonubidowemedizepon.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421778/normal_60183e915d11f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381962/normal_5febe8dd8976e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450043/normal_5ff56936f3e05.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426075/normal_601b60cca6a84.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380680/normal_6023ecb296095.pdfIn PDF document text
    • https://cdn.sqhk.co/javeduner/jehhhjQ/37760654440.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412377/normal_601999bf71c7d.pdfIn PDF document text
    • http://zaxukifo.22web.org/excel_bill_of_lading_templates_free.pdfIn PDF document text
    • http://muriwilosakud.iblogger.org/akkurat_light_pro_regular_font_free.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4506063/normal_5fcf0d3069fdb.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/jirebonudur/best_android_heart_arrhythmia_app.pdfIn PDF document text
    • https://s3.amazonaws.com/vuliwisuwig/gmail_outgoing_settings_android.pdfIn PDF document text
    • https://s3.amazonaws.com/vuxagixil/wakiwanifinugererabuk.pdfIn PDF document text
    • https://s3.amazonaws.com/wekibik/royal_mail_business_redirection_form.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_off0000de2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE2F 5116 bytes
SHA-256: a9900fc3432fb7c7ebb398fd6826d8b97bd6a6ec9175953c8bd58a916f44adcb
font_01_sfnt_off0000efbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFBF 10776 bytes
SHA-256: a593a51212e9804bdad607f0ca9a59f9b74acbb6b18290f26fcd0a5edb6d3f05