Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd22d28f3676b903…

MALICIOUS

PDF

48.2 KB Created: 2020-10-18 02:41:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: f5ba200b9f4ee026af7743accf94b3ea SHA-1: df267332c6ee65c43543879cc7bf5ec222d3a05d SHA-256: fd22d28f3676b9035608425a4de806ceae120ee468755a3ff3ab5f7d7f81191d
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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.
  • 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://gettraff.ru/123?keyword=tcl+roku+tv+32s301+manual In PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/rotesojelunemiroto.pdfIn PDF document text
    • https://lowizozexide.weebly.com/uploads/1/3/0/7/130776176/mijefiziwitudapo.pdfIn PDF document text
    • https://fuparududewon.weebly.com/uploads/1/3/1/8/131856041/7600545.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369166/normal_5f87c9de8d898.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368751/normal_5f87a6e6950c4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368978/normal_5f8858b6a30e5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366664/normal_5f873d80955e6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365626/normal_5f8b7db07720a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368478/normal_5f883540dcde0.pdfIn PDF document text
    • https://kenilajapa.weebly.com/uploads/1/3/1/0/131069910/sorelonirijowijejej.pdfIn PDF document text
    • https://xijonezamo.weebly.com/uploads/1/3/1/4/131407630/kinubesijaneso-davabaver-dekazo.pdfIn PDF document text
    • https://nulixedupalaz.weebly.com/uploads/1/3/0/7/130739510/5287749.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/1cf22.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9699/7030/files/united_nations_general_assembly_resolution_1514.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0494/1827/2935/files/sixojabasagudejutovufa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4828/7904/files/88776541818.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4852/6246/files/zaxuxinat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/7677/8659/files/copy_excel_worksheet_to_another_worksheet_vba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/0321/5778/files/rosemoxibobeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/3626/9470/files/download_smule_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/8560/6296/files/film_editing_techniques_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/9515/7662/files/geometry_congruent_triangles_worksheet.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_off00007d36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D36 5508 bytes
SHA-256: 4c1bf05aae0b583137b07fe9ed54a19cf0dd8f2b83ee0df5e1e85838233e9a56
font_01_sfnt_off00008fe4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FE4 10436 bytes
SHA-256: 7fdf4e67d08c2856f08b37156363a5d039a40f2eb6a498675e8d9fed7685d2d0