PDF malware analysis — malicious · d3192ec3de1f7f45

MALICIOUS

PDF

75.5 KB Created: 2021-01-06 15:00:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07

MD5: 1e918f90cf0f3569dcf791af6062d022 SHA-1: eeaf6050e4b45931a324c73793fc0620dad8152e SHA-256: d3192ec3de1f7f4516616b4daf8bec9d9d081c467a9796fcd3859cde04010138

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically identified as a phishing trojan. It contains an embedded URL that likely serves as a lure for downloading malware, disguised as free antivirus software. The document body, though heavily obfuscated, contains references to 'malware antivirus free for windows 8.1', reinforcing the phishing pretext.

Machine Learning

Nyx PDF Classifier malicious score 0.9997

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://traffking.ru/aws?utm_term=malware+antivirus+free++for+windows+8.+1 PDF link annotation
- https://cdn-cms.f-static.net/uploads/4464065/normal_5fbaa416ea5d1.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4417139/normal_5fa36f315fa1d.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4447096/normal_5fe01f6cce9aa.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4476148/normal_5feb3e1f11c61.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4375541/normal_5f8b11df5ff5e.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/gizonukorad/5769517622.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/cf971946-92a7-4ec8-880c-41ff66e38b75/tapikimetu.pdfIn PDF document text
- https://s3.amazonaws.com/vedexajawo/58226677679.pdfIn PDF document text
- https://s3.amazonaws.com/henghuili-files/30168876945.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/9ffe487d-51db-4da7-a6e7-ca173c13c92a/manual_seeder_india.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_off0000e844.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE844	5336 bytes
SHA-256: `3b09ca5a9df1a2334b89588496913a6868e876dc0fa79e2997d743f0ad5b17e9`
`font_01_sfnt_off0000faa3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFAA3	10696 bytes
SHA-256: `6b722a80f5535758dd033d8986fa55b3a273029f7d732f382a58c4b1c553b914`

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