Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a18a476c30dc0dd…

MALICIOUS

PDF

70.8 KB Created: 2021-02-11 20:16:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: f37a2b12c32b339348ea5a6b8c3afac8 SHA-1: b31397833ac2c35904ee20f53efe9dc2b259bb18 SHA-256: 7a18a476c30dc0dd73767a98ea25a83acf90bbc20114fee284b7473be86e8037
136 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
  • 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://jacksth.ru/wix?keyword=i+volunteer+as+tribute+quote PDF link annotation
    • https://cdn.sqhk.co/fodexuxefeba/agdvNjc/6288155828.pdfIn PDF document text
    • https://siselujasukoju.weebly.com/uploads/1/3/0/9/130969984/wusojodiruvib.pdfIn PDF document text
    • http://ranixug.iblogger.org/50690233892.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484834/normal_601a5cbc3c0c2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446152/normal_6008a7a602372.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407302/normal_5fc72ff9d7cd9.pdfIn PDF document text
    • https://xafosaxit.weebly.com/uploads/1/3/1/8/131859261/liliju-jatamipotebasa-fotaxigiziwena-tipalovivifiz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408702/normal_601c79654b5e6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391326/normal_60249e2e9a69a.pdfIn PDF document text
    • https://cdn.sqhk.co/kagalitisup/hfheeCM/wsdot_ferry_schedule_kingston.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418570/normal_6014580b83336.pdfIn PDF document text
    • https://cdn.sqhk.co/najiligopej/gjfiigj/free_ringtones_popular_ringtones_download.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000d796.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD796 4940 bytes
SHA-256: 5c2e6d19663002462a3e242dcc4c0d9365afefea14a552d8c54f296ebb407cf1
font_01_sfnt_off0000e874.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE874 11280 bytes
SHA-256: d239b1cca8d4726c4902f3f6d7d049e12083e9e406e44b083bc8c800ad16f0cf