PDF malware analysis — malicious · 26293486241e68ad

MALICIOUS

PDF

43.1 KB Created: 2020-10-16 05:19:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15

MD5: 912016ba226fd4e5bba7a746c5c951b5 SHA-1: 67d4068d56e178453b7100f68028443088147636 SHA-256: 26293486241e68ad197fc045d8febae3dc7f4dc890ebefd9669c793acc87f217

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/strik?keyword=planos+y+secciones+del+cuerpo+humano+pdf In PDF document text
- https://cdn-cms.f-static.net/uploads/4366325/normal_5f88de744ae47.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4367313/normal_5f87764647963.pdfIn PDF document text
- https://site-1036862.mozfiles.com/files/1036862/16189888986.pdfIn PDF document text
- https://site-1036900.mozfiles.com/files/1036900/65086730876.pdfIn PDF document text
- https://site-1042509.mozfiles.com/files/1042509/24059652854.pdfIn PDF document text
- https://site-1043855.mozfiles.com/files/1043855/28029030738.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/1/0435/3458/1911/files/bupumetorajig.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/4737/0402/files/the_hollywood_standard.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0497/8746/9986/files/nuzitikuresozazogem.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0501/9084/4084/files/biodiesel_advantages_and_disadvantages.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/b1bb2e2f-40fe-4fe2-bb27-c565111d6148/tuwitetek.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/15c13a63-74d2-4b94-b01b-937f1689c029/tukaxexixoja.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/15fa83f6-9599-42a3-b182-92980308ce63/74777187037.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/e19617dd-436e-4726-b767-5d283179ae08/rokipakezerebotemujoleza.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/238fcbdd-a8d4-488e-bb60-72f72e1db293/nerelaru.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0487/7261/2262/files/ratizego.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0495/9014/1094/files/pomeladuvixosifukave.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0496/6200/1301/files/wewajo.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.

Filename	Kind	Source	Size
`font_00_sfnt_off0000675c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x675C	5496 bytes
SHA-256: `1a02eeca08dcddf40c5d246582e1bbdb11f18c27219e37935b72d93a95447b27`
`font_01_sfnt_off000079e3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x79E3	10860 bytes
SHA-256: `581888f8b45328c4da95a91956ad8138450631c326da0179c2010a05e12f0a6b`

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