Malicious PDF — malware analysis report

Static analysis result for SHA-256 6df0c0dece424acf…

MALICIOUS

PDF

65.3 KB Created: 2021-03-04 22:20:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 8bc8677b8b9a35e94348ec4af86dce7b SHA-1: bf3cb8fc5e262ef86e527820e8deced3fa40eeac SHA-256: 6df0c0dece424acfc3720ca4fdbf2068784fdf9bf0e5f06c6e7431428ddb2085
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://mezovuduw.ru/wix?keyword=western+civilization+since+1300+9th+edition+pdf PDF link annotation
    • https://jefabulovonaju.weebly.com/uploads/1/3/1/4/131438419/2726774.pdfIn PDF document text
    • https://gavevuroboba.weebly.com/uploads/1/3/5/9/135959422/safaporev_zafobaditu_xufebivulod_wumomevike.pdfIn PDF document text
    • http://uscovidcharts.com/borges_biografia9zxct.pdfIn PDF document text
    • https://jukovuwivoxufab.weebly.com/uploads/1/3/3/9/133997180/gufowo.pdfIn PDF document text
    • https://sejerujezoxovod.weebly.com/uploads/1/3/1/3/131398555/waxodizi-tikuvizipimopu-komimameroman.pdfIn PDF document text
    • http://converstarget.ru/answers_hq_noob_badge_emailaji84.pdfIn PDF document text
    • https://sebeguresed.weebly.com/uploads/1/3/5/9/135966133/13f38a04f9b3.pdfIn PDF document text
    • https://nuvawusop.weebly.com/uploads/1/3/5/3/135302159/4909139.pdfIn PDF document text
    • https://vibejatixulaxa.weebly.com/uploads/1/3/4/1/134131444/7607963.pdfIn PDF document text
    • https://dubiriji.weebly.com/uploads/1/3/1/4/131406762/7647256.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/sumesawoxajew/windows_10_pro_1803_update_offline.pdfIn PDF document text
    • https://s3.amazonaws.com/kifutizijebuj/solving_quadratics_review_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/xojafemori/jizemiwatovutavilalur.pdfIn PDF document text
    • https://s3.amazonaws.com/widofafane/irs_reporting_agent_fax_number.pdfIn PDF document text
    • http://ruxuvejefo.epizy.com/logic_puzzles_with_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/werowibovezoje/64576645784.pdfIn PDF document text
    • https://s3.amazonaws.com/jivamubug/do_you_need_a_certification_to_do_eyelash_extensions.pdfIn PDF document text
    • http://weloridotam.epizy.com/vaban.pdfIn PDF document text
    • https://s3.amazonaws.com/fatisake/60136708683.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_off0000c248.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC248 5880 bytes
SHA-256: 9753f07484e583210290beee2406e322a72c5b5fa887de97863c6b6970274cbe
font_01_sfnt_off0000d660.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD660 9680 bytes
SHA-256: ad4906c962572f825b6ed7f06decb159ea586bdbe88ae092b78d6d1f46790cd0