Malicious PDF — malware analysis report

Static analysis result for SHA-256 89b38cb7306f7c8b…

MALICIOUS

PDF

71.5 KB Created: 2021-02-10 03:26:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: c8765009b42aad3b522e4db823c87a0b SHA-1: 51a075076230c9ef19f95abdd6aee11ea195d1eb SHA-256: 89b38cb7306f7c8bd2d76a618d795c38001867f6b324aee1c1da1ad1b419728e
194 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wb?keyword=change%20data%20capture%20example%20in%20informatica In PDF document text
    • http://creditreportusa.info/fozetubadi5dx.pdfIn PDF document text
    • http://antonioit.space/8541120025508lsq.pdfIn PDF document text
    • http://carbackseat.site/train_games_apkpure2ax8e.pdfIn PDF document text
    • http://goldstein.berlin/43283606283t2gvj.pdfIn PDF document text
    • http://gazopulodagifus.iblogger.org/vimeo_best_video_format.pdfIn PDF document text
    • http://losinglotterynumbers.com/equation_aux_drive_partiellexi02o.pdfIn PDF document text
    • https://cdn.sqhk.co/supesuvepo/cIjfnni/zawow.pdfIn PDF document text
    • https://cdn.sqhk.co/patagarinixa/jbWTekY/52707649008.pdfIn PDF document text
    • https://cdn.sqhk.co/jetobatu/ihgfhcm/27791368234.pdfIn PDF document text
    • https://cdn.sqhk.co/vizoxaxijojo/gzdjf4g/riwidirukojuderufid.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/fonibinaraj/quickbook_invoice_template.pdfIn PDF document text
    • https://s3.amazonaws.com/wudibirewuduto/fiduzibinowopafivotipomo.pdfIn PDF document text
    • https://s3.amazonaws.com/remeranexe/ashokan_farewell_cello_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/mavixu/nonketotic_hyperosmolar_coma_treatment_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/gogoxowiniza/relopevijumokozevovosodax.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_off0000db3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB3A 5364 bytes
SHA-256: 267faeab1205453162aad5f62c2ff31615ac6f8f539002453b02ff91b1143d2e
font_01_sfnt_off0000ed55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED55 10476 bytes
SHA-256: 3b0cab5eb11e129f79e68eb66f4260a7100798a0bae58b8366c18c1f56207f47