Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c7596f1d0d72b33…

MALICIOUS

PDF

66.1 KB Created: 2021-02-28 21:33:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 8c039ee080fb701a592cf7b9f67e6683 SHA-1: 87c5c9cc8577b5fbe09655f2d2264b094ef25016 SHA-256: 1c7596f1d0d72b33366dd13a2679d49fe249dd69ad6290cbeb349f71573c154d
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://zajinet.ru/award?keyword=how+to+pair+jlab+to+iphone PDF link annotation
    • https://cdn.sqhk.co/joxutedunik/fIZ2Ahg/pentagon_jr_cero_miedo_gif.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405641/normal_60351d7e75714.pdfIn PDF document text
    • https://cdn.sqhk.co/volotedi/UnVijjM/transformers_robots_in_disguise_2001_streaming_ita.pdfIn PDF document text
    • http://vulefuxudonad.22web.org/zatixenasegudiro.pdfIn PDF document text
    • https://cdn.sqhk.co/soxuxopova/0sFjhja/falitosobetibobuvosep.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486748/normal_5fd09facc53e9.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/xidazeze/nervous_system_ppt_template_free.pdfIn PDF document text
    • https://s3.amazonaws.com/paxunu/18433826782.pdfIn PDF document text
    • http://mevukesamuzu.rf.gd/animorphs_book_6.pdfIn PDF document text
    • http://nabepazefesuju.epizy.com/83469130026.pdfIn PDF document text
    • https://s3.amazonaws.com/zerepuzuze/aisse_full_form.pdfIn PDF document text
    • http://retuguru.epizy.com/59873375218.pdfIn PDF document text
    • https://s3.amazonaws.com/rowubunak/amazon_audible_app_for_pc.pdfIn PDF document text
    • http://zuwosopawekaz.rf.gd/business_studies_a_level_notes.pdfIn PDF document text
    • http://jezirateba.rf.gd/27643468344.pdfIn PDF document text
    • https://s3.amazonaws.com/posufij/19511910884.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_off0000c6e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6E6 5000 bytes
SHA-256: 8bd79c299b76ed16223328334ddada806213eaf2bee32998fae814ff6373dc7b
font_01_sfnt_off0000d7ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7EC 10444 bytes
SHA-256: 1faa69ef279e0e2eb38676fdd1238026ca0913ea6c421bf2d2455c7e9b751618