Malicious PDF — malware analysis report

Static analysis result for SHA-256 08388e89d55a4cf9…

MALICIOUS

PDF

66.6 KB Created: 2021-02-23 21:48:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 6bc4ce6fc77f08991b8e0d4017d1438d SHA-1: cd708f618db2a88c823679ca9f6e0aa97948bd5d SHA-256: 08388e89d55a4cf95fd74d1fc54e85a8c16fd0c95b02694b4e283c584a869db4
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://jacksth.ru/wix?keyword=coda+management+los+angeles PDF link annotation
    • https://cdn.sqhk.co/dugelabomaw/SjgeCgd/bike_trails_iowa_city_coralville.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372696/normal_5fd27ca469cf4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4499656/normal_601b9139b431a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416131/normal_6005be5a4c9d2.pdfIn PDF document text
    • http://xatitakuv.iblogger.org/face_beauty_games.pdfIn PDF document text
    • https://cdn.sqhk.co/wubunepan/jcidhiL/reading_comprehension_lesson_for_grade_3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383165/normal_5fe948a9b1422.pdfIn PDF document text
    • https://cdn.sqhk.co/lemijexo/diiEujf/tunomamoxekiboluvuxo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386836/normal_602d9def9ca7f.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/bifamomove/pathology_mcq_books_free.pdfIn PDF document text
    • https://s3.amazonaws.com/palikuvexake/diwugabivevavonidowiv.pdfIn PDF document text
    • http://rakorexifaxokur.rf.gd/kofunapuvadexa.pdfIn PDF document text
    • https://s3.amazonaws.com/musoxifuvitalo/how_to_draw_cool_and_easy_symbols.pdfIn PDF document text
    • https://s3.amazonaws.com/nabifovu/blackberry_z3_link_for_pc_free.pdfIn PDF document text
    • http://suzawelo.epizy.com/18053731978.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_off0000c873.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC873 4952 bytes
SHA-256: 3ab48d0b469dfc18888569b5d16ac62c714cf32c10b33954904a2b2facbb2562
font_01_sfnt_off0000d938.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD938 10744 bytes
SHA-256: d9056e0c30e6bf38b58e47cb77fbeed6067e08f779d3416ab40bd7f09912fc2a