Malicious PDF — malware analysis report

Static analysis result for SHA-256 89dd5db0eb6a3932…

MALICIOUS

PDF

70.3 KB Created: 2021-01-29 07:48:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 87d80f55ff9c98bd83052f4844c20fcb SHA-1: 68437e290e8c6d1691b8f85a087dd9f83d43a865 SHA-256: 89dd5db0eb6a39320fd3766516f630783a30c9e44f123e459f1e26fc77ab073b
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/123?utm_term=control+systems+engineering+nise+pdf PDF link annotation
    • http://uaportal.site/enlace_molecular_sigma_y_pib5n97.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380079/normal_60052da46fdbc.pdfIn PDF document text
    • http://swiss-family.space/35901051473rk0ul.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446774/normal_60060febdb6c5.pdfIn PDF document text
    • http://lastmarkt.ru/among_us_free_online_machwk7k.pdfIn PDF document text
    • http://sport-stavki.fun/vuduxobj7vbt.pdfIn PDF document text
    • http://usersonlineguardingsettings.site/kabafo7bu8e.pdfIn PDF document text
    • http://yarrebitteh.online/48459161089ulw7a.pdfIn PDF document text
    • https://cdn.sqhk.co/pafevola/4r5jihd/jesuberodov.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419642/normal_5fff3f7d97b4d.pdfIn PDF document text
    • http://sdorovie-sustavi.xyz/third_grade_learning_games_apk7j62u.pdfIn PDF document text
    • http://normaa-id.com/interesting_facts_about_world_war_2_memorial7o0z1.pdfIn PDF document text
    • http://vsspb.ru/pokirom0fg7q.pdfIn PDF document text
    • http://swiss-family.space/badugaperinumomonagogosbb5l.pdfIn PDF document text
    • http://stakingyfi.com/gijevekosikawakeburipjnkt.pdfIn PDF document text
    • http://petersikdar.com/urge_surfing_handouthmew7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446770/normal_5ff031555c4bd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nitesegu.epizy.com/17896284264.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_off0000d314.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD314 5160 bytes
SHA-256: fe54a922eb37c264ce6b548859af6b2ace748b1466058a00827d4624767f628f
font_01_sfnt_off0000e494.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE494 11752 bytes
SHA-256: a399ae17b2a06a4c9b58d8991dcb78aa11581700a4e433955a6dd88862991a5b