Malicious PDF — malware analysis report

Static analysis result for SHA-256 20f65a1830371177…

MALICIOUS

PDF

69.7 KB Created: 2021-02-07 10:37:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 45e28dee81d2f46ce614fa75d9b2cb4e SHA-1: f260cee1f3daeaf081525f1603c7b3ef49aca543 SHA-256: 20f65a18303711779b19c39effce2e98d3c430d015c28b846955b7b66cc635fa
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://seumenha.ru/wb?keyword=irish%20fiddle%20songs%20sheet%20music PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4423728/normal_5fdb25994e42f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490273/normal_6005068043266.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409602/normal_60181b81113b5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490274/normal_5fc953ceeaa5f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388835/normal_601254b4a7c68.pdfIn PDF document text
    • http://slampochka.ru/funabibifatlh2a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wiwesokowam.epizy.com/79526194282.pdfIn PDF document text
    • https://s3.amazonaws.com/zufojadibi/camo_camo_radio_on_ringtone.pdfIn PDF document text
    • http://varaxekewuveza.epizy.com/graphing_lines_in_slope-_intercept_form_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/fexuror/madrid_international_airport_flight_information.pdfIn PDF document text
    • http://zowujobosega.rf.gd/new_company_profile_format_in_word.pdfIn PDF document text
    • http://foxozokibi.rf.gd/anemia_y_tipos_de_anemia.pdfIn PDF document text
    • https://s3.amazonaws.com/vixuwogetiv/desozuxalewetinikibarexat.pdfIn PDF document text
    • http://dinedolorexos.rf.gd/lezosi.pdfIn PDF document text
    • https://s3.amazonaws.com/vuforewebub/maplestory_come_find_me_cheat_sheet.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_off0000d66f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD66F 5160 bytes
SHA-256: 745592bd2727e7f2fd47ddd5d90caa05dcecb30b823d2fa05cc1301d64185708
font_01_sfnt_off0000e7da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7DA 9948 bytes
SHA-256: e3c87e6fdcb07ffdeb7729dc6fe6000664548aae47c88a10e6f29e9c39d4e5c1