PDF malware analysis — malicious · c78cf0aff6645f80

MALICIOUS

PDF

66.5 KB Created: 2020-12-11 18:31:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15

MD5: e4e1bb12fb3abc3d94a820b4f4daae25 SHA-1: ef983db4378ecc8067f66f08f3108ad9c1d85e2a SHA-256: c78cf0aff6645f80178a8f9a3bfd78b1fe107b482c6c6fa4e9d61073922fabe8

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'traffset.ru', which is likely part of a phishing or malware distribution scheme. Although no scripts were explicitly extracted, the PDF structure and the presence of external URLs suggest it's designed to redirect users to malicious content.

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://traffset.ru/aws?utm_term=happiest+christmas+tree+sheet+music PDF link annotation
- https://cdn-cms.f-static.net/uploads/4410002/normal_5f9fb1c7c326d.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4405950/normal_5fd145f894ebc.pdfIn PDF document text
- https://pebawozo.weebly.com/uploads/1/3/4/8/134865175/f4937290e24a84a.pdfIn PDF document text
- https://volexerakonoza.weebly.com/uploads/1/3/4/7/134713377/kiredadijaw.pdfIn PDF document text
- https://zemaxixose.weebly.com/uploads/1/3/4/6/134636511/548666f24d2e0.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/dbe3e70c-5114-48f8-8fc8-09b5031dbb87/29860330803.pdfIn PDF document text
- https://s3.amazonaws.com/sevoga/union_and_confederate_army_comparison.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/8c8d7c0e-6d51-4d0c-acc2-0e98dea8753b/nanapunuduxa.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/d30ed7e9-fc68-41a7-873f-0dd2fd919a7a/area_code_720_ontario_canada.pdfIn PDF document text
- https://s3.amazonaws.com/mijedusovineti/20641950854.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_off0000c74e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC74E	5100 bytes
SHA-256: `575f2f522ad79628ddeddb93bc4d260f5d729c427249876b25995054ca993efd`
`font_01_sfnt_off0000d87d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD87D	10848 bytes
SHA-256: `d81bdb92dd59deb5d54ad057d42a3c3ee3f53f7d3dd4060ca06d2983ec466bda`

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