Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf076a20d3bbb7ed…

MALICIOUS

PDF

70.9 KB Created: 2021-03-06 12:22:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: dd62cf53f42d2c784e3c7366d1bdfb81 SHA-1: 0a93f37a8c12ac5cbef790cbd0ab939d004a78f2 SHA-256: cf076a20d3bbb7edfe47f6d9e4bf10330dc558349370d0023bc3ea6efa1cc561
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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/award?keyword=farmall+super+a+3+point+hitch+kit PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4369776/normal_60016599144d5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427267/normal_60288de24c0b0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365608/normal_60048b1ce5278.pdfIn PDF document text
    • http://nizavevorupuj.mywebcommunity.org/97391978662.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387218/normal_5fc9b5aedc193.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475562/normal_603044a7da89a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491450/normal_5fe1bfa7520a6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427498/normal_600900443745e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454051/normal_5fd31be2c68e9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454556/normal_601a56ff19c69.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449417/normal_5fee18d83ebdd.pdfIn PDF document text
    • http://botanilix.mygamesonline.org/element_tv_codes_for_xfinity.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448556/normal_5fdd7982229a7.pdfIn PDF document text
    • http://wssummer.space/no_equipment_bodybuilding_workoutkmqqb.pdfIn PDF document text
    • http://lamakexo.scienceontheweb.net/20089507583.pdfIn PDF document text
    • http://euromarket.pro/skyfactory_3_botania_guide4v2kk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443610/normal_6032f3fef391c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478422/normal_5ff198d1ab4ff.pdfIn PDF document text
    • http://apparently-home.com/839953691741r84h.pdfIn PDF document text
    • http://expo-kit.ru/98810517844dcgcc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459621/normal_6026c2381917d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gaxilitexu.onlinewebshop.net/ti_84_calculator_app_mac.pdfIn PDF document text
    • https://s3.amazonaws.com/fipijife/colne_community_school_ofsted_report.pdfIn PDF document text
    • https://s3.amazonaws.com/toliwudalamem/ginuwalotivufopesapulow.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_off0000d734.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD734 5356 bytes
SHA-256: a8ba7b25c27aecf942008ae008a820c59b94fa1ab76d22c3bfa68e22e084eac3
font_01_sfnt_off0000e93f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE93F 10736 bytes
SHA-256: 58aa1a7951501f31a584338e262c4bc740debdd07fe3935fe3089b41e7c34291

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