PDF malware analysis — malicious · 74057b21dab59c51

MALICIOUS

PDF

49.4 KB Created: 2020-10-20 23:15:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04

MD5: 35ecd9dd7c2e060e4c416bb17870315a SHA-1: 77869e990ef3617bee59e2c6c6e6c7befee99239 SHA-256: 74057b21dab59c519477cca45427d864792d54d5109350f2f9253a60dec3daa2

124 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.
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://gettraff.ru/123?keyword=pediatrics+clinical+pharmacy+practice+guidelines In PDF document text
- https://gowiwoniba.weebly.com/uploads/1/3/1/8/131857243/1865409.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4382958/normal_5f8e1a552f442.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4370267/normal_5f8965633a9af.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366024/normal_5f89fcba89908.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4365598/normal_5f8e9c9fd966f.pdfIn PDF document text
- https://temazojirilezin.weebly.com/uploads/1/3/2/3/132302863/faluji.pdfIn PDF document text
- https://nogomikosisodop.weebly.com/uploads/1/3/2/6/132681488/6263493.pdfIn PDF document text
- https://xubuvene.weebly.com/uploads/1/3/1/3/131380433/c8d430.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/1/0440/8098/8310/files/kutedun.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0266/8560/4017/files/jufaka.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0481/4415/4791/files/konotarofidod.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0497/5008/1690/files/43486518430.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/e0d3bef9-6a71-4bb8-81ca-de03c9c0a9d0/ditotinafefowo.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/40640573-d262-45a6-864d-3715a76968e1/tipemivubebisufe.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/b0b54b8f-ba8b-4681-a6ae-cc61c80a067d/pemibumidelurarufule.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/a41f9126-7abc-4b89-ad46-456642a9b211/planilha_de_avaliao_fisica_excel_g.pdfIn PDF document text
- https://s3.amazonaws.com/tetazino/gitedipopuwanosaviwozot.pdfIn PDF document text
- https://s3.amazonaws.com/memul/21339377866.pdfIn PDF document text
- https://s3.amazonaws.com/fasanag/notox.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_off00008170.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8170	5588 bytes
SHA-256: `64ec7c55f5af15c90ab93ca9e7b80d4890143c9283065d2571e2294dbcc45d15`
`font_01_sfnt_off0000943e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x943E	10796 bytes
SHA-256: `5f4c6f010824c994155834f57af42dc2c6a54fc35692ddf2044d5f266112a41d`

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