Malicious PDF — malware analysis report

Static analysis result for SHA-256 744273698afc12de…

MALICIOUS

PDF

67.4 KB Created: 2020-11-10 09:31:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: 38914a2f5a4cabf976ef6402277ca61d SHA-1: ffe26dde68c2c408a76e277f3e269d234ddab4ee SHA-256: 744273698afc12deca2cf3e9337c3ec890c27ebb500639a12cc11914c3a18ab6
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://traffset.ru/aws?keyword=tuxedo+town+court+ny PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4381980/normal_5f8cea1097304.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474462/normal_5fa8f6427ba5f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370063/normal_5fa7320ab8dcc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473645/normal_5fa70d87a6b8b.pdfIn PDF document text
    • https://bugalesatu.weebly.com/uploads/1/3/4/3/134309104/ruzuridoze-botixekutajuj-vitawitap.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407064/normal_5f9498a5a8444.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369782/normal_5f899bf9e5069.pdfIn PDF document text
    • https://lijipipixeralof.weebly.com/uploads/1/3/3/9/133999964/dapadozilotoxux.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475734/normal_5fa9bb4d29c68.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384634/normal_5f985a41e387f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/a091fc48-0dc6-483b-8cfe-b777ece99f4a/46254407884.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/73f2f08c-f1ed-4966-bbce-ae4fe5db5949/19585767016.pdfIn PDF document text
    • https://s3.amazonaws.com/jajoxulabojaso/65916758176.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_off0000c987.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC987 4724 bytes
SHA-256: 61b9810189d8f368a481f71a5519cfc8415e21b6cc8cf4237644ca9a71233725
font_01_sfnt_off0000d9c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9C6 11588 bytes
SHA-256: 306dd0c5bb8a124dd077585ce7882f21c5f1a37590fc5aa07f081ad268ae3dd1