Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f8b0c673612b95d…

MALICIOUS

PDF

67.8 KB Created: 2021-02-13 14:33:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 9036328fe804436b9224236f86832b87 SHA-1: a7a9556cf6818a59da6bca3b0d91e6e73e0f35be SHA-256: 6f8b0c673612b95da1d0fc52d0c68a328b5ca5c44137210289147ab574584d3a
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://leonvi.ru/wb?keyword=bose%20soundsport%20free%20user%20manual%20pdf PDF link annotation
    • http://milanomoda-italy.website/elite_bilingualisma00yg.pdfIn PDF document text
    • https://cdn.sqhk.co/tireronerogo/crRid9l/44677391381.pdfIn PDF document text
    • http://procripton.com/zibekorowutifibefotik9yjnj.pdfIn PDF document text
    • http://canlisohbetim.net/30792852906lzuo6.pdfIn PDF document text
    • https://cdn.sqhk.co/gafokoru/jiihIDc/platform_io_fastled.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/vuterijoze/48899704479.pdfIn PDF document text
    • http://xevorerokune.epizy.com/so_gara_tara_chabila_tara_ringtone.pdfIn PDF document text
    • https://s3.amazonaws.com/vosimalume/cbspd_study_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/bofake/java_spring_4_tutorial.pdfIn PDF document text
    • https://s3.amazonaws.com/zunaduxa/brake_caliper_bolt_guide_pin.pdfIn PDF document text
    • https://s3.amazonaws.com/davolazupivowi/vevo_apk_android.pdfIn PDF document text
    • http://pinogizege.rf.gd/82524958663.pdfIn PDF document text
    • https://s3.amazonaws.com/rejiner/pikiv.pdfIn PDF document text
    • https://s3.amazonaws.com/veraxawewib/97095456649.pdfIn PDF document text
    • https://s3.amazonaws.com/punurum/general_questions_and_answers_for_civil_engineering.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_off0000cac4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAC4 5236 bytes
SHA-256: c26731ee093b53eca40fa2eb0f7f6594a1784e3df5ab5f3846a9794bba8c31f7
font_01_sfnt_off0000dc79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC79 11216 bytes
SHA-256: 837a38748bebd06a5cd68246b9b498cbb0d2d0b19801e76e3f9d9fe071536ac7