Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb68229a0c11dec9…

MALICIOUS

PDF

67.4 KB Created: 2021-02-09 12:58:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 167fd491aac161526bf90e0d5460e07e SHA-1: f8e822e1818ddfa392e2dc99b4499ab3bdfb2852 SHA-256: fb68229a0c11dec96f9bba97f77b2a6808d96120f952df7806225ceecdfed2d8
144 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/wb?keyword=taleemi%20calendar%202019-%2020%20punjab%20pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4452372/normal_5fca47a9e1cbb.pdfIn PDF document text
    • https://cdn.sqhk.co/zogameva/ajivjdr/takeout_food_to_eat_in_austin.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387826/normal_600c0ccd27b13.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380086/normal_5fcd253d78fe7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495399/normal_5fc6d74c6b6f9.pdfIn PDF document text
    • http://fulitip.iblogger.org/acronis_true_image_2014_full.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377938/normal_6018da07d510e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tunufefenus.rf.gd/59486855649.pdfIn PDF document text
    • https://s3.amazonaws.com/vofadoloves/mupidated.pdfIn PDF document text
    • https://s3.amazonaws.com/tajimipojimo/bcbs_federal_dental_claim_form.pdfIn PDF document text
    • http://beralopijabeziz.rf.gd/60539492136.pdfIn PDF document text
    • https://s3.amazonaws.com/vexosafugunu/91146870898.pdfIn PDF document text
    • https://s3.amazonaws.com/kotodur/chakravarthy_kannada_movie_darshan.pdfIn PDF document text
    • https://s3.amazonaws.com/welanisowari/linisesogokesasum.pdfIn PDF document text
    • http://fapomotomojopog.epizy.com/wewiwizelubagaraku.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_off0000ca78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA78 5800 bytes
SHA-256: 18e8622f473227128705f02d87ee09d7d9eacfff22ec07dc85814adf2d411bf4
font_01_sfnt_off0000de24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE24 10376 bytes
SHA-256: 2cbb536ecec03174f5b4f19aa7cd304a9802ca7ddbecbecd222b4ffc0777faf8