Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb64211b7fcb2590…

MALICIOUS

PDF

72.9 KB Created: 2021-02-14 10:21:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: f01e35bb46f5eb179ebb2ca405196f1e SHA-1: 6067e71f3f77a2e568d8b190dc954a891f15ae69 SHA-256: bb64211b7fcb2590ce179c0c801dda514c2957fb13af84684253be42312b4f3a
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://baarspo.ru/wix?keyword=pueblo+district+60+jobs PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4417413/normal_60277810e435b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388174/normal_5ff63004a8ab8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371523/normal_600eae6f2a37d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491723/normal_6014c364bf1d2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491965/normal_600fbcc369122.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/rodigapigeta/carburetor_function.pdfIn PDF document text
    • https://s3.amazonaws.com/zobuwubedak/pokemon_battle_revolution_para_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/jipowumat/pesujo.pdfIn PDF document text
    • https://s3.amazonaws.com/bezorito/iot_platform_market_report.pdfIn PDF document text
    • https://s3.amazonaws.com/jeduzizonox/rodrigo_concierto_de_aranjuez.pdfIn PDF document text
    • https://s3.amazonaws.com/mijumomub/hashar_movie_in_filmywap.pdfIn PDF document text
    • https://s3.amazonaws.com/legesiliv/if_conditional_type_0_and_1_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/jezekemunidup/5th_grade_math_worksheets_volume.pdfIn PDF document text
    • https://s3.amazonaws.com/xupimaral/61087089348.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_off0000dfdf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFDF 5236 bytes
SHA-256: 67814de0f877686b22972002700f19a9326262663ab5ca3f6db36e86ad10801a
font_01_sfnt_off0000f1c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1C0 10860 bytes
SHA-256: bc52f6621f92c1c9834118a7b483447fe8b94b4e9d274986d7b1fb3b06d0584d