Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7082390299a8ce9…

MALICIOUS

PDF

65.5 KB Created: 2020-11-16 18:17:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-07-02
MD5: 694b5f46cca139d6f67a9edf13e27b3f SHA-1: 1428cd223aa17191f3bae40f9369bd14aea5e6e3 SHA-256: e7082390299a8ce981b1d2e6fb84d6cc24a18dc3952e0943ef0ab92a181378d1
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffine.ru/123?utm_term=cwv+topic+6+study+guided+analysis In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366973/normal_5f872e75f3720.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489716/normal_5fa95ce7a63b0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401711/normal_5f960452e3ef0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389599/normal_5f9d3d934aeb3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373517/normal_5f88f327b5b96.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/lumixi/jujidikisogafibotapit.pdfIn PDF document text
    • https://s3.amazonaws.com/davolazupivowi/wafupexejolevivekobomi.pdfIn PDF document text
    • https://s3.amazonaws.com/wibedubosateg/vizebanala.pdfIn PDF document text
    • https://s3.amazonaws.com/pidufozu/tissue_types_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/wokil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/935bda59-c3ac-44d1-86a9-0067578b696c/psaume_de_la_cration_paroles_partition.pdfIn PDF document text
    • https://s3.amazonaws.com/mibiwivanetuj/25896586394.pdfIn PDF document text
    • https://s3.amazonaws.com/xezujuxoz/rajesh_kumar_md_in_johnson_city_ny.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/71c5796d-0e5e-4e54-946c-921f0d0cde8f/44178115785.pdfIn PDF document text
    • https://s3.amazonaws.com/temujonuwu/coordinate_geometry_formulas_list.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_off0000c2f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2F2 5460 bytes
SHA-256: b49002b071ed8a349b0b6431b5c450ba1abcb1202d7dfb85265afbe597658ddd
font_01_sfnt_off0000d5b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5B5 10520 bytes
SHA-256: c7792fabb3cf371bad61d0ff6aef89954f36ec55a8276a7240ed5c065cec2503