Malicious PDF — malware analysis report

Static analysis result for SHA-256 b970e30e76c15ec5…

MALICIOUS

PDF

65.2 KB Created: 2021-02-16 19:21:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: c10f0937868b7a3fdfdc54af1cc3a390 SHA-1: ba5c6b37941887acd0a7e0a4bb8443dafdcbb588 SHA-256: b970e30e76c15ec51ca3199110266d9c37cbcd7ed48b0becef3197cc72e7607a
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://seumenha.ru/123?utm_term=remote+code+for+bose+solo+5 PDF link annotation
    • http://medyayazilimtr.com/1234740812bdpy8.pdfIn PDF document text
    • https://lanasasaf.weebly.com/uploads/1/3/0/8/130815311/ligilewet_valiguregibax.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389361/normal_5ff5670fc5504.pdfIn PDF document text
    • https://koxowugazetumul.weebly.com/uploads/1/3/6/0/136015765/1936827.pdfIn PDF document text
    • https://koxawikala.weebly.com/uploads/1/3/4/6/134643159/tirot.pdfIn PDF document text
    • https://wetolobumusu.weebly.com/uploads/1/3/4/5/134579125/0184f5a73.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470405/normal_5fce4feea715a.pdfIn PDF document text
    • http://womenalikumat.22web.org/jetojebemuvupeba.pdfIn PDF document text
    • http://malespw.xyz/69265356055sg1yf.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/bisiku/berliner_platz_4_b2.pdfIn PDF document text
    • https://s3.amazonaws.com/zedudo/infinitives_exercises_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/fatikonavori/pogunigavakenolux.pdfIn PDF document text
    • https://s3.amazonaws.com/sedimeraxufi/1001_night_java_game.pdfIn PDF document text
    • https://s3.amazonaws.com/kukazowox/arsenal_3gp_videos_for_free.pdfIn PDF document text
    • http://devisufuxuvit.epizy.com/bronx_community_college_application_form.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_off0000c33a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC33A 5228 bytes
SHA-256: 27d773f8a4a205e724fb450ab982fac957f2a810e4782c88e323b44e0a5b0aa6
font_01_sfnt_off0000d4fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4FB 10296 bytes
SHA-256: cb49faf47d9eecc8e256e7378f92c18b5cc442e28bf2114bf6f1a7206eb9c9b1