Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d2b291513011942…

MALICIOUS

PDF

61.2 KB Created: 2021-02-19 12:04:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 0d1bf28e1459727af9b750de22ba5b11 SHA-1: 457068e15e84c662b6e72fa17e8599204e9559a3 SHA-256: 9d2b291513011942a9867364f043ce99b675886a16ee3d1bf9bcfc6fbfe5f81a
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://druttle.ru/wix?keyword=us+government+unit+5+test+answers PDF link annotation
    • https://minadefimufev.weebly.com/uploads/1/3/4/6/134635785/mulimefoj.pdfIn PDF document text
    • https://lidafeli.weebly.com/uploads/1/3/4/6/134683499/fofurarunevubi.pdfIn PDF document text
    • https://dibasipelop.weebly.com/uploads/1/3/0/7/130738559/gowowive_bijalubabe.pdfIn PDF document text
    • http://pululap.22web.org/univ_bejaia_dz_formation_218_diplomes.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450733/normal_5fef88669f3a0.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/tigewibejageju/agriculture_biologique_tunisie.pdfIn PDF document text
    • https://s3.amazonaws.com/wusigipufuvowix/bobovifi.pdfIn PDF document text
    • http://worupowa.epizy.com/liquor_inventory_excel_spreadsheet.pdfIn PDF document text
    • https://s3.amazonaws.com/wutezigojuxi/berolomubebe.pdfIn PDF document text
    • http://mikovugeg.epizy.com/1540362141.pdfIn PDF document text
    • https://s3.amazonaws.com/tojazudibumogab/belgium_league_table_home_and_away_form.pdfIn PDF document text
    • https://s3.amazonaws.com/mejawiwomak/msds_sheet_lysol_toilet_bowl_cleaner.pdfIn PDF document text
    • https://s3.amazonaws.com/mefadedosuw/9239019432.pdfIn PDF document text
    • http://wevikokuzufos.epizy.com/how_to_write_sop_for_phd_application.pdfIn PDF document text
    • http://ladisopezaxak.epizy.com/8520103303.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_off0000b501.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB501 5240 bytes
SHA-256: 722d6ef5f9495b55dc03b2c91cb38c4233e00488b9182753322258814026b2a1
font_01_sfnt_off0000c6d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6D7 9852 bytes
SHA-256: e938b67f5d7a63905e690e981a1b70e9482a0216d631284cde91f0301f55d052