PDF malware analysis — malicious · 8e2a1e30031f3acd

MALICIOUS

PDF

76.2 KB Created: 2021-01-15 06:09:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11

MD5: e5eb896ba607ebe59f8340234773db23 SHA-1: 33d75a403692fb872d5f7101c3fed9e17cb7374e SHA-256: 8e2a1e30031f3acdca1f544ebb37cb36fdd9ea0f12088c38fdbd769db930613b

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The embedded URL, 'https://trafffe.ru/aws?utm_term=cracked+steam+all+games+free', strongly suggests a phishing or scam attempt related to cracked software. Although no scripts were explicitly extracted, the PDF structure and the nature of the URL point towards a social engineering attack.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

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=cracked+steam+all+games+free PDF link annotation
- https://cdn-cms.f-static.net/uploads/4426971/normal_5fa84c19c94a1.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4470843/normal_5fb8ad4b7d0ea.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4408720/normal_5f9473778d1fe.pdfIn PDF document text
- https://site-1197000.mozfiles.com/files/1197000/fusionsphere_openstack_installation_guide.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4498842/normal_5fbed01203ed9.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4371799/normal_5fbdcb955144a.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4413118/normal_5fcd623f47d4c.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4376380/normal_5fc70216c9921.pdfIn PDF document text
- https://site-1175130.mozfiles.com/files/1175130/bisonod.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4368245/normal_5fe006ddc856d.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/pisedij/ccna_book_in_hindi.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_off0000ede6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEDE6	5308 bytes
SHA-256: `a683d3095cc84d4c199a9aa9c9fefacdc3d11115b4561be55def0aae3a3c3dce`
`font_01_sfnt_off0000ffde.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFFDE	10848 bytes
SHA-256: `bda919fcd972bd2c05b4103cb8e6334782c34666f4b00504d98a654dcdfeda8d`

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