Malicious PDF — malware analysis report

Static analysis result for SHA-256 07283e5e1b633c3e…

MALICIOUS

PDF

42.7 KB Created: 2020-11-02 04:57:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 9bd1d3c864560ad2be60ab96df4ec21a SHA-1: 3828ab947dab5aabdbdf11cd8da83fbccc785d66 SHA-256: 07283e5e1b633c3e8415a21f4dd63512adc13771bd6fa00459f9cfe0c75602cd
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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://cctraff.ru/aws?keyword=read+julia+quinn+books+online+free In PDF document text
    • https://roxejane.weebly.com/uploads/1/3/4/4/134486752/nobinotorix-zevoxokefumar.pdfIn PDF document text
    • https://gamupizesusaza.weebly.com/uploads/1/3/1/3/131398140/posubuxapeb_fufivito.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373016/normal_5f97ab666d464.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000069d5.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000069d5.bin)
    • https://cdn.shopify.com/s/files/1/0502/0912/8626/files/60852202134.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/cashew_nut_processing_plant_project_report.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7590a32c-1bf3-42de-9287-491bc238bc3b/hidruro_de_cromo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/2847/4787/files/wepajijovijixawupalaxipaz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac01af69-df2f-4360-a7c2-b9e04df9c2f4/40335436503.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c1528ed4-50c9-457e-bcd9-2f91c713a410/general_health_questionnaire.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/7967/4272/files/lumbalgia_mecanica_tratamiento.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/5325/9187/files/bavedasalaxug.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 extracted file (font_00_sfnt_off000069d5.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000069d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69D5 5316 bytes
SHA-256: 59cdd928b5664fa93f29fb2ea0812792dc11e35d539fdb35aead9231212e62f1
font_01_sfnt_off00007bf9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BF9 10136 bytes
SHA-256: 6087236c1f1d3c6c0e06ba0767e0c06438f983ffde5fa935039ad00a2392cbe8