PDF malware analysis — malicious · c0c3d24f080147c4

MALICIOUS

PDF

51.4 KB Created: 2020-11-04 01:08:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27

MD5: d93a886434cca02316264233c88bbed2 SHA-1: 192241e67ec03a40c48ada50e35f1c70c5ecc2dc SHA-256: c0c3d24f080147c4c718d098cd372845745fc7a6ed59c8a9905c6b8facae446e

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, https://gettraff.ru/strik?keyword=how+to+join+the+mafia, which is likely used to deliver a secondary payload or phish the user. The document body text also contains this URL, reinforcing the malicious intent. The ML classifier also strongly flagged this PDF as malicious.

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=how+to+join+the+mafia In PDF document text
- https://sizukejagu.weebly.com/uploads/1/3/2/6/132681884/mopuzagezu.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4408984/normal_5f9e17ae1ce13.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4365613/normal_5f939985cf274.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4370062/normal_5f9674872a99d.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4416144/normal_5f96eed48d9b6.pdfIn PDF document text
- https://vatedubajepe.weebly.com/uploads/1/3/4/3/134371970/buzeti_wurowonenuga.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4423714/normal_5f9db52739c8f.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369146/normal_5f92ce396845f.pdfIn PDF document text
- https://nipefewemaxu.weebly.com/uploads/1/3/4/3/134387654/9131318.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/f58b059f-2216-46c8-aa11-b01be1ab32d0/kanezofawotarogopejawebo.pdfIn PDF document text
- https://s3.amazonaws.com/pisik/majetijenosijowa.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_off00008ac6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8AC6	4832 bytes
SHA-256: `331bc8d37a389a8e76fd9911688ecdf546f97dabc4102395dac1b04765963342`
`font_01_sfnt_off00009b25.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9B25	11340 bytes
SHA-256: `61c3a4c81d203cce485ee21771f88528f9903dc2bfb4036758efe1928befbaf3`

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