Malicious PDF — malware analysis report

Static analysis result for SHA-256 e991f2a22cdea091…

MALICIOUS

PDF

69.5 KB Created: 2021-02-14 18:09:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 8d7b6420596d2b1bde133bc5158729b7 SHA-1: 56b76a84c68e1f17171bbf200f5475b6ae5abf20 SHA-256: e991f2a22cdea0918c2bc6836afb1f2ec81f2e636f40ef5627ec656e659073fc
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://jottigo.ru/wix?keyword=the+physiology+coloring+book+%25282nd+edition%2529+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4446496/normal_5ff9cfa7b74d5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425504/normal_5fed5d22dc255.pdfIn PDF document text
    • http://copyrighytsupport.com/real_car_driving_games_for_androidqr3e9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384144/normal_5fcc57bd9bbe4.pdfIn PDF document text
    • http://niludop.22web.org/comprehensive_aphasia_test.pdfIn PDF document text
    • http://piguzipudoval.iblogger.org/whirlpool_gold_series_oven_owner_s_manual.pdfIn PDF document text
    • http://berozava.iblogger.org/domain_and_range_worksheet_with_answers.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486367/normal_5ff918541122e.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/davolazupivowi/53432992478.pdfIn PDF document text
    • http://lozebaloporan.epizy.com/bavukopegemugosaviliza.pdfIn PDF document text
    • https://s3.amazonaws.com/rakabexozu/pamuzifovirizizedepono.pdfIn PDF document text
    • http://logoroxesum.epizy.com/cafeland_apk_mod.pdfIn PDF document text
    • https://s3.amazonaws.com/rodigapigeta/bevuvogikup.pdfIn PDF document text
    • https://s3.amazonaws.com/kesumasaka/betheme_header_builder_plugin_free.pdfIn PDF document text
    • https://s3.amazonaws.com/gudukupir/mifarezakamililotinude.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_off0000d25d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD25D 5748 bytes
SHA-256: da7aca9886caeababb83fce75809fef78d70a9d3427fb4ab95b6df0f57dc8f6b
font_01_sfnt_off0000e609.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE609 10208 bytes
SHA-256: 26f0d85c54c542f3196309f7643961b75f54f46c40f6b382afb1682359d0d172