Malicious PDF — malware analysis report

Static analysis result for SHA-256 4fa1fe978a8055e6…

MALICIOUS

PDF

70.4 KB Created: 2021-03-03 18:26:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: a6b64e314a1e1c01f6dba2503948dced SHA-1: 76f4714e89709ad39cacd6fa42c5f2b2cda89ce5 SHA-256: 4fa1fe978a8055e675e90743cef077eeeab8b0230bdbe96cf570dc52617a39b5
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://xajibur.ru/wix?keyword=active+insufficiency+of+quadriceps PDF link annotation
    • http://riwotivadejud.sportsontheweb.net/64532057236.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461216/normal_6028f015dc70a.pdfIn PDF document text
    • https://cdn.sqhk.co/zupivikeg/jaQjieQ/guxojulavavomiva.pdfIn PDF document text
    • http://fupemagis.mywebcommunity.org/2020_ford_explorer_launch_problems.pdfIn PDF document text
    • http://marinarus.space/2006_ford_crown_victoria_maintenance_schedulet0a16.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384463/normal_5ff2d296e8dad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458848/normal_5fe9402267635.pdfIn PDF document text
    • http://presalon.xyz/kotewupunedekabedi8tkxd.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/mexijegedakol/31334777605.pdfIn PDF document text
    • https://s3.amazonaws.com/latufenaw/commercial_lease_agreement_template_alberta.pdfIn PDF document text
    • https://s3.amazonaws.com/xeroguru/24539960311.pdfIn PDF document text
    • https://s3.amazonaws.com/lunojol/arya_1_movie_audio_songs.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_off0000d7c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7C4 5396 bytes
SHA-256: 1a2f86a935a96918aa5452059689e1b822ddad0bb2d94a7295b788580cc80667
font_01_sfnt_off0000ea41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA41 10272 bytes
SHA-256: 4fade11dd6c548afe95a6e40b9b3d4b74c740d5e6e0846201d23447e08ac66e8