Malicious PDF — malware analysis report

Static analysis result for SHA-256 d81e939bec68d0de…

MALICIOUS

PDF

71.4 KB Created: 2021-02-16 10:52:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 1be7fabccaaafff2b12b326080142b27 SHA-1: 488c56e72cb8dab8555d3355072b2b840dce337b SHA-256: d81e939bec68d0de043af01d0654bd229daa1fd31e80ccfb24fd8cc602daa6b5
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://baarspo.ru/wb?keyword=app%20biblia%20de%20jerusalen%20gratis PDF link annotation
    • http://perevod24-card2card.site/90234070249kf5hy.pdfIn PDF document text
    • http://liwitavazij.iblogger.org/bupafuterewoziluren.pdfIn PDF document text
    • http://jodazok.22web.org/wing_chun_illustrated_magazine.pdfIn PDF document text
    • http://proita.space/christmas_trivia_and_answers_printabkja2b.pdfIn PDF document text
    • http://svoydvalend.xyz/sich_vorstellen_spanischpk1fc.pdfIn PDF document text
    • https://cdn.sqhk.co/vufebevefo/iigcflT/origami_butterfly_ball.pdfIn PDF document text
    • http://cherrypimp.online/makivesezuripuganekagub5ui7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450248/normal_60221a41cef23.pdfIn PDF document text
    • http://vakekaninu.iblogger.org/xoseju.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/fukezavazuj/banshee_season_3_utorrent.pdfIn PDF document text
    • https://s3.amazonaws.com/jowutoneranemuk/botany_questions.pdfIn PDF document text
    • https://s3.amazonaws.com/fasomusogapovi/20360396663.pdfIn PDF document text
    • https://s3.amazonaws.com/lusabifef/stylish_cv_template_word.pdfIn PDF document text
    • http://pewulalabes.epizy.com/84059237431.pdfIn PDF document text
    • http://xefobimulekojuw.epizy.com/mumaboki.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_off0000d641.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD641 5332 bytes
SHA-256: 5516a947985116066372eb1c5051cdf590d8bc14372efad8410ac5df2d5d0455
font_01_sfnt_off0000e86b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE86B 12076 bytes
SHA-256: 30535c54fdb5f4ee9205242b8079a5ecbfbedcff8a414bc4ab5cb9f364b5edf6