Malicious PDF — malware analysis report

Static analysis result for SHA-256 24670144c78ed08a…

MALICIOUS

PDF

72.0 KB Created: 2021-02-27 19:23:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 9eb3fd4ad226428ad3803f3fc113ada8 SHA-1: 82afebb4148b9fb3b2d0c0b4d60e01c956a4d47b SHA-256: 24670144c78ed08af2b0b8d6182a3f39512f960e840cbf6d4326af2ab3fb7d47
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://midufefew.ru/award?keyword=where+to+buy+cuisinart+bread+maker PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4427528/normal_6018448f15791.pdfIn PDF document text
    • http://hotloveme.online/losixufogeerlzl.pdfIn PDF document text
    • http://xexapitanegis.getenjoyment.net/average_machine_learning_engineer_salary_toronto.pdfIn PDF document text
    • http://liketime.online/how_to_setup_panasonic_kx_tes824pphwx.pdfIn PDF document text
    • http://evatopshop.xyz/how_to_shift_a_18_speed_transmission27b2n.pdfIn PDF document text
    • https://zepazilarewar.weebly.com/uploads/1/3/4/3/134310653/kixen-jagavapuz-sonuxet-zexedavero.pdfIn PDF document text
    • https://jinonapipi.weebly.com/uploads/1/3/4/4/134481743/773975.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387581/normal_5fdf90c99a3f1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453560/normal_601233a975bb9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472185/normal_6015f4c302c20.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/pidufozu/madagon.pdfIn PDF document text
    • https://s3.amazonaws.com/xijalovelokolep/lovujutemexelasurijisuri.pdfIn PDF document text
    • https://s3.amazonaws.com/faxaxos/acrobat_standard_dc_direct.pdfIn PDF document text
    • https://s3.amazonaws.com/midipes/importance_of_broiler_production.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_off0000dad2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAD2 5468 bytes
SHA-256: 2dc513bc4f506ed50ba208476afd37f292a3a31877377342a9ca0fc58e2c2140
font_01_sfnt_off0000ed4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED4F 10664 bytes
SHA-256: f8e6e6444912ffc25f30c1925e71f698072cb7e6bdee417d97647c128dbc8ed5