PDF malware analysis — malicious · 027decf8aa571441

MALICIOUS

PDF

58.0 KB Created: 2020-10-16 18:45:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15

MD5: cca5fb3d516725e870ef09d118fc0cca SHA-1: 39382bb702bd5babed0c478193b090a241e42cae SHA-256: 027decf8aa5714418ac4973f750f57bd425187ceb16268b2228cf772ad8782a4

184 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.
Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM

Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
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://ttraff.com/123?keyword=salad+dressing+recipes+pdf+download In PDF document text
- https://cdn-cms.f-static.net/uploads/4369311/normal_5f88960209598.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369656/normal_5f88c23225fae.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366664/normal_5f874ed69a0f2.pdfIn PDF document text
- https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/4102594.pdfIn PDF document text
- https://sukowaletudevux.weebly.com/uploads/1/3/0/8/130874669/5691185.pdfIn PDF document text
- https://kurikezexiwu.weebly.com/uploads/1/3/0/7/130775092/5556211.pdfIn PDF document text
- https://fotejisatowonu.weebly.com/uploads/1/3/2/3/132302873/750b9e662.pdfIn PDF document text
- https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/4045700.pdfIn PDF document text
- https://ranerenonosojib.weebly.com/uploads/1/3/1/4/131483420/8261178.pdfIn PDF document text
- https://sepikupi.weebly.com/uploads/1/3/0/7/130738949/guzejuwiba.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/684eac4f-1687-41de-953f-43199a9020bd/nenutikogit.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/7d7d674f-4c4e-423f-aca7-e5473edf3ea3/wudibupemixosolis.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/5730fc1b-aaed-49ea-8156-66e9ac2f7ec4/vegisirigibu.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/5d1a1aa0-1468-49f0-980d-e701856ba933/91164650747.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/f78954c4-0347-4a49-8fca-bce769629d2a/kexirat.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/cd2bde55-fc60-4b78-b82e-2466f4f807f1/866052818.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/583f1b8d-8f2d-4915-8e21-a3d15ab6948e/98582249165.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0487/0474/9718/files/91101221285.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/8059/6121/files/east_side_community_high_school_psal.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0483/8893/1741/files/90188347544.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
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00008022.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8022	5520 bytes
SHA-256: `c3f24b9325941efd70389bcb310fb844bbcacc10a8588b34207f884d193b907a`
`font_01_sfnt_off000092f4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x92F4	3364 bytes
SHA-256: `5a122b86b73e7e864d3010e72a05adec506f1ce839fd5d8ea18b0c997829d537`
`font_02_sfnt_off0000a09b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA09B	10572 bytes
SHA-256: `04ee42a4774f527494eaa34a88e95a9c3855c39c31f88ee313b8963ca4863c2e`
`font_03_sfnt_off0000c4de.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC4DE	16096 bytes
SHA-256: `2f40fe14b937a62a9e77eb22ef41c51065e81e4dab9411d1f8bac2c0e6d34990`

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