Malicious PDF — malware analysis report

Static analysis result for SHA-256 287190df485d3350…

MALICIOUS

PDF

62.0 KB Created: 2021-02-11 19:55:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 1c7d89a85428bcafc8ffa478e51d800e SHA-1: c44956adf0b9c67b1440f088ad6bc35658e366a5 SHA-256: 287190df485d3350090664a300710a70e9e430e98f738bfae027cac52c5af3b8
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/wix?keyword=manual+testing+jobs+in+charlotte In PDF document text
    • http://ketosimple.online/krystal_allergen_menuatz5c.pdfIn PDF document text
    • http://itawegan.fun/jovijee9omd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476930/normal_5fefefaebb637.pdfIn PDF document text
    • https://cdn.sqhk.co/kanedufopuma/hhhjljf/peacemaker_suicide_squad_john_cena.pdfIn PDF document text
    • http://snatural.space/cellular_line_shadow_manualehr5hs.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376606/normal_5ff123e57399e.pdfIn PDF document text
    • http://dompodklyuch.com/national_championship_football_history_scoresytumz.pdfIn PDF document text
    • http://reduslimitalia-ufficiale.site/tlc_discography_rarqczp8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446774/normal_5fda3333bbc6d.pdfIn PDF document text
    • http://veronaital.space/brickleberry_season_5udf7u.pdfIn PDF document text
    • http://trujillostacoshop.com/anand_sahib_path_with_meaning_in_punjabixwdeb.pdfIn PDF document text
    • http://acgmgroup.ru/62629087321ppc03.pdfIn PDF document text
    • http://beliyden.xyz/208286193459tg7y.pdfIn PDF document text
    • http://hookup673.site/king_s_raid_successors_of_the_will_malobj6n.pdfIn PDF document text
    • http://hookup154.space/luvaduletunamo843da.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/vatosolikijike/6014540058.pdfIn PDF document text
    • https://s3.amazonaws.com/mokamoba/fuxavilojebarogi.pdfIn PDF document text
    • https://s3.amazonaws.com/minegikukovel/14850877764.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_off0000b811.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB811 5280 bytes
SHA-256: d54036c45daf51b1c88cdf926d1c75d127e4292d39c1cba52d074c30b51e8d5a
font_01_sfnt_off0000ca11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA11 9448 bytes
SHA-256: 983fd775b5ddd0cbc56bf866fc084a79323a0849c79a6537621a68b6c7d0f38e