Malicious PDF — malware analysis report

Static analysis result for SHA-256 e56b1406dceb781a…

MALICIOUS

PDF

73.9 KB Created: 2021-03-02 04:17:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: afa73a7f5d28a3322a4d76d41c548cae SHA-1: e3bc1779580aa5a4dbf45a012ea6d320ef2119fd SHA-256: e56b1406dceb781a4d5fe6d03ea5a17349bfe519e4ba798c0be7700cc6dd02be
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://ponafet.ru/aws?utm_term=sharepoint+designer+2010+approval+workflow+examples PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4465935/normal_5ffde80f19176.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460263/normal_5fcdc249af0f9.pdfIn PDF document text
    • https://cdn.sqhk.co/vasibejovej/faMvj22/6196749097.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389127/normal_6026b3c586021.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413118/normal_5ffd98af2e6f3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368976/normal_60287d15815c5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369164/normal_5fdecadc90f17.pdfIn PDF document text
    • https://cdn.sqhk.co/pofaxexaxi/30XhhTv/witir.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407316/normal_5ffd479640b7b.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/vitelitubovuluj/how_long_to_write_a_nonprofit_business_plan_for_investors.pdfIn PDF document text
    • https://s3.amazonaws.com/zuponefi/guia_examen_toefl.pdfIn PDF document text
    • http://paxovabaresubal.rf.gd/7126658517.pdfIn PDF document text
    • http://lisunamubeso.epizy.com/gisixopa.pdfIn PDF document text
    • https://s3.amazonaws.com/najubu/android_store_apk_free.pdfIn PDF document text
    • https://s3.amazonaws.com/pululusodogi/rockwell_versacut_vs_dremel_saw_max.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_off0000e10b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE10B 6168 bytes
SHA-256: a9b778c06c987ac18ea86cb4502b2fca4467cd30835365d51365c1bdcf712f52
font_01_sfnt_off0000f5fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5FB 10720 bytes
SHA-256: 6ef6c5a219e0452b28ddb2e7799e79b42663943303293139e1067560ec389b5d