PDF malware analysis — malicious · 6d9c6a6ba122de47

MALICIOUS

PDF

40.7 KB Created: 2020-10-30 15:07:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26

MD5: 093fb1dab103a4a1120e1fd7051780bc SHA-1: ed4836ef8b267b91ab165b90b5cdf1d928ce56e9 SHA-256: 6d9c6a6ba122de47ed3e9b3fd7d719982a984e7852ddd69846f46b76846535c3

94 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link to a known malicious redirector infrastructure, which is a common tactic for phishing or malware distribution. The ML classifier also strongly flagged this PDF as malicious. The embedded URL is designed to lure the user into clicking it, likely leading to a phishing page or a download of further malicious content.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 3

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.
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/strik?keyword=scientific+method+interactive+notebook+pdf In PDF document text
- https://cdn-cms.f-static.net/uploads/4370264/normal_5f8e5c78cd7e4.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4385422/normal_5f9b610744f0e.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4388818/normal_5f8d8f21ec161.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4368978/normal_5f96c6393234f.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4372361/normal_5f8ef347056c0.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369788/normal_5f92f381bc80a.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/sugaguxagu/different_layers_of_atmosphere.pdfIn PDF document text
- https://s3.amazonaws.com/foneniz/livro_de_receitas_ac_camargo_cancer_center.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/87f7d925-d5f7-47ce-a8d3-045c0ab4fbba/90990033051.pdfIn PDF document text
- https://s3.amazonaws.com/jozetej/my_best_self-_working_card_tricks.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/cc0e0804-c1ab-49e1-bb05-2e22f9cec664/96536903661.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_off00005cec.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5CEC	5552 bytes
SHA-256: `4620cddd2c6597bf2dc80370a558d1efcb0475c2633ede6635335ea13958b096`
`font_01_sfnt_off00006fa9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6FA9	11204 bytes
SHA-256: `1bf54dfbaeccbf0c23ee5b03cda3d21817f668fef7d5cc6a55abdf5fc2ef8589`

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