Malicious PDF — malware analysis report

Static analysis result for SHA-256 a03c46eeeb32d8b4…

MALICIOUS

PDF

69.6 KB Created: 2021-02-19 16:44:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 0a370b327956a180ec7afd2e470843ba SHA-1: 76a74e0c64a5ed2acfae6e37bcd87d3c3a2bd378 SHA-256: a03c46eeeb32d8b4841aaa6931153af23ae545346221770812dfa06d0025cf9c
194 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wix?keyword=antec+900+case+manual In PDF document text
    • http://investmag.org/ap_calculus_practice_problems_with_answerscjf4x.pdfIn PDF document text
    • http://naturfresh.fun/dorezelosebivwq68s.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446027/normal_5ffd757a7e552.pdfIn PDF document text
    • http://vovawun.iblogger.org/5255308816.pdfIn PDF document text
    • http://fisidijomufuto.22web.org/written_argument_format.pdfIn PDF document text
    • http://bilkaita.space/455170630234ogl6.pdfIn PDF document text
    • http://salonly.xyz/microsoft_word_style_guide_templatew5nto.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/xewamejixolefaj/tijolefegefatimor.pdfIn PDF document text
    • http://zufejudo.epizy.com/asos_jumpsuit_size_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/wikurixobelu/zizefemumebimunerex.pdfIn PDF document text
    • https://s3.amazonaws.com/wamatasamegu/94716962563.pdfIn PDF document text
    • https://s3.amazonaws.com/gogunabones/99566296467.pdfIn PDF document text
    • https://s3.amazonaws.com/zemunomipazikez/zivejiwomapuxo.pdfIn PDF document text
    • https://s3.amazonaws.com/buponuwebi/fedex_customer_care_email_id_uae.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_off0000d17b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD17B 5136 bytes
SHA-256: c4184d76741160c5962c627658b270aad320b032154a4b9d5b89c0918627213c
font_01_sfnt_off0000e2e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2E1 11616 bytes
SHA-256: 24de38c21715f468ecc1993bd5ba074a8b60a0b35c25551bc208ad8eb7801191