PDF malware analysis — malicious · 37f6b2ebe463eaaf

MALICIOUS

PDF

78.8 KB Created: 2020-11-17 05:43:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27

MD5: 89284bcc850afacb2dc4feffccc4f05f SHA-1: df66d0a45c4040a18d0ffb79dcee6468228e6da6 SHA-256: 37f6b2ebe463eaafd0c978cf75386bc5d1e64e47234940b93b962aef283a7af5

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains an embedded URI pointing to 'trafffe.ru', which is a strong indicator of a phishing or malware distribution attempt. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect the user to a potentially harmful external resource.

Machine Learning

Nyx PDF Classifier malicious score 0.9995

Heuristics 4

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
External URI info PDF_URI

PDF contains an external URL action
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://trafffe.ru/strik?utm_term=the+balloon+donald+barthelme PDF link annotation
- https://rofinodaki.weebly.com/uploads/1/3/4/7/134721453/1023490.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4393485/normal_5fad4d519491c.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4394082/normal_5f90e67fd50f0.pdfIn PDF document text
- https://sagerogokijisoj.weebly.com/uploads/1/3/4/6/134601402/bb9a41f32c3.pdfIn PDF document text
- https://niliwuwez.weebly.com/uploads/1/3/4/2/134265541/9448370.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4367290/normal_5f879c993bbe7.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/degagaziv/cetoconazol_creme_bula.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/c692aff7-dfe3-40e1-b56a-a9ae4dce4b54/84875639852.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/63a478d4-4184-46cb-9af8-3b19bd12ba87/crack_sketchup_pro_8.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/ea18c0a4-796d-4937-9a53-383cff3fa77c/cell_membrane_structure_pogil_answers.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_off0000f5b7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF5B7	4976 bytes
SHA-256: `5bd13af2186e66610c2f063e8895b90ee2437f71aa639e19d9cc3726e7e233d1`
`font_01_sfnt_off0001066c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1066C	11912 bytes
SHA-256: `2ba5498181d4a44b6631e5f92bb2f55feda34047af7d0c924df13349b9e99630`

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