Malicious PDF — malware analysis report

Static analysis result for SHA-256 6db1ef6dd00261dd…

MALICIOUS

PDF

70.3 KB Created: 2021-02-18 07:07:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 73f9bca5876518f625daa567bd66edad SHA-1: 0b7903dd0f1ffb63eef711d12e55d293132ec38b SHA-256: 6db1ef6dd00261dd58fafbfc9a74226c09740f643a85e1bd5ca4feea9a105a6a
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://bologen.ru/wix?keyword=how+to+render+in+cinema+4d PDF link annotation
    • https://murovufusefafa.weebly.com/uploads/1/3/5/3/135331463/72f51bf268e0f.pdfIn PDF document text
    • https://xufetujada.weebly.com/uploads/1/3/4/7/134745175/pexewanujalusiw-nulusepabataduk-zimagixixavaj.pdfIn PDF document text
    • https://suwudaxodorepe.weebly.com/uploads/1/3/4/8/134885248/soxadezag.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4494139/normal_5ffde94fbed01.pdfIn PDF document text
    • https://rewazute.weebly.com/uploads/1/3/4/6/134648352/wilupukowowisitewos.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366000/normal_5fcbf10bdc129.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486051/normal_5fed6580a7c2f.pdfIn PDF document text
    • https://lufuneliza.weebly.com/uploads/1/3/2/6/132682735/39b39e5af0.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/xulikamul/nvidia_jetson_agx_xavier_developer_kit_datasheet.pdfIn PDF document text
    • http://sekovukubetib.epizy.com/national_parks_nsw_annual_report.pdfIn PDF document text
    • https://s3.amazonaws.com/difigomisosak/free_flight_simulator_for_android_tablet.pdfIn PDF document text
    • https://s3.amazonaws.com/widuxade/63087450641.pdfIn PDF document text
    • https://s3.amazonaws.com/gowebabuxogiro/lupifas.pdfIn PDF document text
    • https://s3.amazonaws.com/piwanisaj/chicken_pox_exposure_in_pregnancy_guidelines.pdfIn PDF document text
    • http://zovixis.epizy.com/tozilesi.pdfIn PDF document text
    • http://fusuxitizubuka.epizy.com/78888692150.pdfIn PDF document text
    • https://s3.amazonaws.com/zabevog/debate_structure_worksheet.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_off0000d755.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD755 5016 bytes
SHA-256: c6d6f169649b134d51d8f34aae7bf2d1c99216c129645a21b08412b3afd2aab5
font_01_sfnt_off0000e85d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE85D 10580 bytes
SHA-256: bbfd00a74542d1b012c9cbc46e655b5711776c796bb520a6f2dfa9934c247de6