PDF malware analysis — malicious · 04620bbf6c0467a9

MALICIOUS

PDF

81.8 KB Created: 2020-11-26 16:41:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05

MD5: bdc8b6f96d3a58a8c973ce67a937a62b SHA-1: bd4eeae3d88172404dbe5fb67375736f770c2528 SHA-256: 04620bbf6c0467a9ea538983a4c36869a9c598cd5e94e0a95934fbe3086a786f

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'trafffe.ru', which is likely a phishing or malware distribution site. The document body is heavily garbled, suggesting an attempt to obscure its true content or purpose.

Machine Learning

Nyx PDF Classifier malicious score 0.9996

Heuristics 4

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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=kinh+thanh+cong+giao PDF link annotation
- https://cdn-cms.f-static.net/uploads/4388814/normal_5f9588a57b6e6.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4367300/normal_5fbd8ffe695b1.pdfIn PDF document text
- https://mufedagejex.weebly.com/uploads/1/3/4/7/134726032/vimimijidife.pdfIn PDF document text
- https://sazunanul.weebly.com/uploads/1/3/4/4/134488017/8880869.pdfIn PDF document text
- https://gejizataki.weebly.com/uploads/1/3/3/9/133997606/bixoxizi.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/9845ebad-4515-49d1-b0d7-59038751db35/kissral_bluetooth_5._0_earbuds_manual.pdfIn PDF document text
- https://s3.amazonaws.com/viromibukoleliw/main_characters_in_the_count_of_monte_cristo.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/707a3153-b589-49c5-8c7a-c4982e61e9dc/60388505261.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/48ca79e7-46d7-44ce-82e6-e7ba74276505/73254470414.pdfIn PDF document text
- https://s3.amazonaws.com/purufiz/world_war_1_quiz_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_off00010259.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10259	4724 bytes
SHA-256: `eff2bcc17696faa95b2da1329f105c4708b5e1fa9b49dc0be9a8cb152bb7a93e`
`font_01_sfnt_off00011275.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11275	12280 bytes
SHA-256: `ae1708a79c68b8feba22b631a7d69e36f4c3197aa0608ca85724315135791602`

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