Malicious PDF — malware analysis report

Static analysis result for SHA-256 6699b50859ca8aef…

MALICIOUS

PDF

71.2 KB Created: 2021-01-26 17:40:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 58c3052b9c8391e0c2c24d76552add1c SHA-1: 5e2f1ec566eb17e884f501753c1aba6ffb835fb7 SHA-256: 6699b50859ca8aef53eeb30d5716718557c79dce1e366247ae7d7909ecf395b3
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/123?utm_term=quit+claim+deed+with+life+estate PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4410727/normal_5ff0b40010fd2.pdfIn PDF document text
    • https://cdn.sqhk.co/nizekidido/cvjcib0/kuvujuwotobofoz.pdfIn PDF document text
    • https://cdn.sqhk.co/duvapegoleva/5aheOGs/61506429770.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379719/normal_5fff4dac2ed22.pdfIn PDF document text
    • http://rukunikuxajosog.22web.org/mathsbox_probability_higher_answers.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372740/normal_60075f7f0304a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447263/normal_5fe9cf9ec4823.pdfIn PDF document text
    • https://cdn.sqhk.co/fexilejedit/ighbhji/wefukazalewogisexejuw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zowiseli.epizy.com/blackberry_z3_software_update.pdfIn PDF document text
    • http://tewidunutazi.rf.gd/61964663189.pdfIn PDF document text
    • https://s3.amazonaws.com/tojazudibumogab/almug_icon_pack_5._8._0_apk.pdfIn PDF document text
    • http://waruzav.epizy.com/xebapewugiwuf.pdfIn PDF document text
    • https://s3.amazonaws.com/libowebujakux/68401087865.pdfIn PDF document text
    • http://jepogedepujadul.rf.gd/51329684995.pdfIn PDF document text
    • https://s3.amazonaws.com/novipaliwid/request_for_quote_templates_free.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_off0000daf7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAF7 5316 bytes
SHA-256: d043313d25719e901689179de91cfeb39570cf89ba0c3d5921f50e17827deef5
font_01_sfnt_off0000ed05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED05 10252 bytes
SHA-256: 684329cb3b616a629ad4ca28bdee1efafef4e97770407c2df9feb9a2d1f635ed