Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9b23ec101f043ff…

MALICIOUS

PDF

71.4 KB Created: 2021-02-13 12:14:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 6a7329cdec8451c4d961682ea947f6d6 SHA-1: c01a3a9ecf382104912bbda337557e143b4507ed SHA-256: e9b23ec101f043ff99c55332229a2eccbff51db0bdc127ad4492b7ed38e7979c
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://seumenha.ru/wix?keyword=ccna+security+answers PDF link annotation
    • http://trudogoliya.online/bererofedobujesaw8ty2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469116/normal_5fea1e3a88b3d.pdfIn PDF document text
    • http://antinomi.design/xenezuxamejawizawelorit3eij.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4530868/normal_600046010e0f5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470552/normal_5fe401b1797e0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477400/normal_5ff33e3a8aab5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383156/normal_6005492eebb02.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/leteraxewe/declaration_of_independence_worksheet_apush.pdfIn PDF document text
    • http://xoxinazur.rf.gd/ravejaxurefujimid.pdfIn PDF document text
    • https://s3.amazonaws.com/wutisigila/curriculum_guide_grade_10_cookery.pdfIn PDF document text
    • http://jovigoxuja.epizy.com/ketaman_asmoro_cover.pdfIn PDF document text
    • https://s3.amazonaws.com/bokexizometun/dezazon.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_off0000ddd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDD2 4860 bytes
SHA-256: 6e523c9c59653a2176593c39c2dd3e03031bf0f91f422f5d09fa9514c6ad0f44
font_01_sfnt_off0000ee7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE7A 9988 bytes
SHA-256: 8624dd7c8f34d8166e8595fad86aaa642e6ef1dfa5559646d5202bf13fb2705f