Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a662d5ceac0d31d…

MALICIOUS

PDF

62.3 KB Created: 2021-02-26 12:54:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: b12051320a599f4683b0f2d2a25a7ac4 SHA-1: 345c7900da17540cf56e4d899289a60e1dca71ad SHA-256: 0a662d5ceac0d31d0814a52db13dd603f0ac595b0c46ab1fdf47f5702ceffe85
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://mezovuduw.ru/award?keyword=praying+for+your+future+husband+pdf+free+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4379854/normal_601848adae627.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484114/normal_5fca5cb2df35f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479435/normal_5ff0ab1a8dc0f.pdfIn PDF document text
    • https://cdn.sqhk.co/xafeperale/aox6ge0/69141228219.pdfIn PDF document text
    • https://cdn.sqhk.co/dagufiwus/djalhdP/kosijow.pdfIn PDF document text
    • http://peromopativej.mypressonline.com/guviw.pdfIn PDF document text
    • https://cdn.sqhk.co/dufikibagi/opLRjjI/one_talk_mobile_client.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450898/normal_5ffdd7fa53dc6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386849/normal_5fe337ab7c0f6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383797/normal_5ffeb7fbc18e2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390328/normal_60102db8793d3.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/xomudufe/corporate_finance_definitions_and_terms.pdfIn PDF document text
    • http://jidoxib.rf.gd/20690559477.pdfIn PDF document text
    • https://s3.amazonaws.com/pesetufavo/how_do_you_say_yes_thank_you_in_spanish.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_off0000b87b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB87B 5640 bytes
SHA-256: 40b4bbd60441f83eb5f473185ae0c0502772f4f62bfdf550b19704504d2ea1d2
font_01_sfnt_off0000cbbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBBC 9500 bytes
SHA-256: 4a3bf179efc3a9a099fbf29e9e1310168b35003567caef56bc352a9331494b82