PDF malware analysis — malicious · 705ac2da1fa59dbf

MALICIOUS

PDF

63.9 KB Created: 2020-11-23 05:26:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11

MD5: e1b3e5c95e32d0ddfa12680929542d89 SHA-1: 05cab5e20209d25f8a21e6a67c6c0fa192f29eff SHA-256: 705ac2da1fa59dbf00561814c4d480e76e66bd163c9cffe4ac6e467919952ffc

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL pointing to a suspicious domain, which is likely used to deliver a secondary payload. The document body, though heavily obfuscated, suggests a technical topic to mask the malicious intent.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

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://trafficel.ru/wb?keyword=solar%20mobile%20charger%20circuit%20diagram%20pdf PDF link annotation
- https://cdn-cms.f-static.net/uploads/4497359/normal_5fad74bccd1d5.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4373519/normal_5fb300ea3739c.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4485329/normal_5fb34de674b57.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4460070/normal_5faa5f354d8c6.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4393197/normal_5fa0c7c3971c0.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4418762/normal_5f9b04503f52a.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4389104/normal_5f9c6186abd5b.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366389/normal_5fafdbc808355.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4386335/normal_5f8fe2d1d7031.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4476432/normal_5fa791f1c6599.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/lanubili/vedic_astrology_software_for_android.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_off0000be37.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xBE37	5632 bytes
SHA-256: `9cb885db9059cdab7586e8d79fa20f0bcf1cd376525fdbd26826dc7c85a91f88`
`font_01_sfnt_off0000d12c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD12C	9920 bytes
SHA-256: `67f8213a3bb955e42f1239a5ce4f1555f7b351483f58441e7d1ac3ac570b6681`

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