Malicious PDF — malware analysis report

Static analysis result for SHA-256 ead5c8a034232f37…

MALICIOUS

PDF

65.8 KB Created: 2021-02-23 08:08:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 9f25217c4699e2b061bbb568af78d638 SHA-1: 8ba31fd18d10734d38c719c7663f40d415a5b00d SHA-256: ead5c8a034232f3775df5c1d4b4a53a8e46ee6972eb0e4b80000a4e246433b5c
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://maypoin.ru/123?utm_term=ps+vita+for+sale+near+me PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4370744/normal_5fdb037f1374b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471704/normal_6023e111d4575.pdfIn PDF document text
    • http://1xbets-reg.site/piwudukowesotugevebipixezr3zrx.pdfIn PDF document text
    • http://fallofelin.online/46426811285tz5zc.pdfIn PDF document text
    • https://cdn.sqhk.co/kovezozeseg/7eWpnJ2/6280854339.pdfIn PDF document text
    • http://afracheat6.xyz/vupajutznfxj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470960/normal_5fca603acd71f.pdfIn PDF document text
    • http://magic-world.site/6652130998oan10.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/naxizugenabi/biwalesixupojerij.pdfIn PDF document text
    • https://s3.amazonaws.com/zedilegol/waxanepefibosexisit.pdfIn PDF document text
    • https://s3.amazonaws.com/geraromu/23308623460.pdfIn PDF document text
    • https://s3.amazonaws.com/befafuni/63316308404.pdfIn PDF document text
    • https://s3.amazonaws.com/padadutiseni/brain_teaser_questions_for_adults_with_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/kelukakeb/go_math_grade_1_teacher_edition_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/zasepo/65247932477.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_off0000c572.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC572 4972 bytes
SHA-256: 7dcfb71f8aa6392538b98f533e9b23c097c35ebbfe10de73943746011a41c94f
font_01_sfnt_off0000d64f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD64F 10604 bytes
SHA-256: 7887b105fc104b861687c1d8ba9fc4e83a0572d78a463cc1d90eae4c32800f6d