PDF malware analysis — malicious · f361000940558611

MALICIOUS

PDF

69.0 KB Created: 2020-12-28 08:34:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12

MD5: 7045794e75b5e2df666d93f6d36929f9 SHA-1: 34e8586cad40c80f4a142a80c804416c547d6a0b SHA-256: f3610009405586118fad2ee4036071f9928e057c844b432097596fa5d068354d

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is identified as malicious by a ClamAV detection and an ML classifier. It contains an embedded URI pointing to 'trafffe.ru', which is a strong indicator of malicious intent, likely for phishing or malware distribution. The document body is heavily obfuscated, preventing a clear understanding of its intended lure, but the presence of the external URI is sufficient to classify it as a malicious document.

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/aws?utm_term=burra+katha+songs+free++naa+songs PDF link annotation
- https://cdn.sqhk.co/kokowoxiwi/QdBKpgg/19138366407.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4365598/normal_5f8fafe110c18.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/cf398a49-a87e-4a9a-8acb-3c1cae660d38/mujuzegatadudijo.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/59c696c6-fe3d-4fa5-a1d5-acd9eb13d294/easy_reader_books.pdfIn PDF document text
- https://s3.amazonaws.com/zaxawetawupo/how_to_make_report_writing_example.pdfIn PDF document text
- https://s3.amazonaws.com/palikuvexake/2020_election_polls_today_minnesota.pdfIn PDF document text
- https://s3.amazonaws.com/xalexojaxipud/disaster_recovery_plan_template_excel.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/ccd9c98f-de98-4917-9956-498459e76b00/82015026314.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/8966d89f-bbed-4b0d-9546-a471583a548e/jubekaluxekujut.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/67343270-2d68-49a0-9909-f90b3b34a682/orange_money_transfer_africa.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_off0000d233.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD233	5108 bytes
SHA-256: `877aee7228c253f0392d036b47cc621ad83ad6e4d89ebb0d8bfd86240cf9c658`
`font_01_sfnt_off0000e399.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE399	10648 bytes
SHA-256: `23c5fd7a79673af54e83cf161f6c379cd19e50b8c585acc2e70f1150ee26ff79`

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