Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d126a71f9ba1deb…

MALICIOUS

PDF

65.7 KB Created: 2021-02-09 03:02:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: dbaf2be4ef03ea2e760e30e958a665ae SHA-1: 5174fabbe1aa61acf2ff59a63c9efcfba13c9a87 SHA-256: 5d126a71f9ba1deb9aa3363921fecabc02a243b6423f084f73dab797859b3684
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://crophysi.ru/wb?keyword=labour%20reporter%20magazine In PDF document text
    • http://wowezixuxaxu.22web.org/synaptic_package_manager_windows_10.pdfIn PDF document text
    • https://cdn.sqhk.co/lijuwezasip/iaMhhG1/descargar_banana_kong_2019.pdfIn PDF document text
    • http://devlp.design/gangs_of_london_season_2_episode_19wrik.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470038/normal_600a4e26139f4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485001/normal_601ef1dfd2699.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369633/normal_5ffbaf8e41f1b.pdfIn PDF document text
    • http://jusapp.club/16367870457v8gz0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403271/normal_5fc6dd1c6d7d3.pdfIn PDF document text
    • http://sepibuzare.22web.org/philippine_soap_opera.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/lanaladu/92162392602.pdfIn PDF document text
    • http://gusufarafedi.epizy.com/create_mailing_labels_from_excel_spreadsheet.pdfIn PDF document text
    • https://s3.amazonaws.com/likadojivivofu/bullying_effects.pdfIn PDF document text
    • https://s3.amazonaws.com/zewimu/freelance_website_html_template.pdfIn PDF document text
    • http://nopizapokife.epizy.com/customs_union_definition.pdfIn PDF document text
    • https://s3.amazonaws.com/buxoparadazegu/android_automotive_audio.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_off0000c497.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC497 5060 bytes
SHA-256: 52cd79ccfe0126194991660ddcc79d5e3fdb29217db77422876445da47a60b7e
font_01_sfnt_off0000d5c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5C3 10740 bytes
SHA-256: 13031466480c962b9b153b8a8d21c2af9ac2ff2ea93f2f072cc6306427ddd3f2