PDF malware analysis — malicious · cfa44375cc04083a

MALICIOUS

PDF

71.7 KB Created: 2021-01-08 09:03:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14

MD5: 6c3e4619bfa2bd1f5079cfd0909d25ba SHA-1: 1ebfe6564b9c34aca94a0bb46ef0757d1b938070 SHA-256: cfa44375cc04083a468963a2bfe4749221c4060098bb85e6c5d86d5e44e6d999

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that directs users to a suspicious domain, likely as part of a phishing or malware distribution scheme. Although no scripts were explicitly extracted, the nature of PDF malware often involves exploiting vulnerabilities or embedding malicious JavaScript to achieve its objectives.

Machine Learning

Nyx PDF Classifier malicious score 0.9997

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/aws?utm_term=companion+animals+act+guidelines PDF link annotation
- https://static.s123-cdn-static.com/uploads/4370266/normal_5ff191837ed35.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4366381/normal_5ff2787c14943.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4406782/normal_5fcf4fd3b9248.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4420775/normal_5fc8a2947940c.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4373516/normal_5f8c629431f20.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4387813/normal_5fbc81d05664f.pdfIn PDF document text
- https://cdn.sqhk.co/lozuzupadis/rLURJgg/rivals_at_war_hacked_apk.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/a18a8647-3bed-45de-8213-7846e6db4409/kudolodobozutem.pdfIn PDF document text
- https://s3.amazonaws.com/wofaxil/tilejomozonowexukamip.pdfIn PDF document text
- https://s3.amazonaws.com/jolituzoji/words_starting_with_f.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/0747b38f-b707-421f-a3ef-d7777722bcba/fulgrim_pl.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_off0000ddb4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDDB4	5200 bytes
SHA-256: `922e8df869ddaca84b35c857bae4d6c1c1fc5eb6b215b5c8f26f701b35a247b3`
`font_01_sfnt_off0000ef49.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEF49	10140 bytes
SHA-256: `3cbaf1145741da64515d5fd737f035247f41f21f4ace7a7fdea150946b63db72`

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