PDF malware analysis — malicious · 4c49de493210d29a

MALICIOUS

PDF

67.3 KB Created: 2020-11-24 21:41:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11

MD5: 8f05d3264f0c689b504cfc68027fa0c1 SHA-1: 90f1e39927d4938a78e692831eacd40fd01b44eb SHA-256: 4c49de493210d29ad1ef985926b14099a9222e2cd6c48809a59b677ceb592963

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 URI pointing to 'trafftec.ru', which is likely a malicious domain used for phishing or malware distribution. The document body, though heavily obfuscated, appears to be a lure related to a poem title, suggesting a social engineering tactic to entice clicks on the malicious link.

Machine Learning

Nyx PDF Classifier malicious score 0.9996

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://trafftec.ru/strik?utm_term=what+happens+in+the+poem+the+skater+of+ghost+lake PDF link annotation
- https://cdn-cms.f-static.net/uploads/4367941/normal_5f8cb996a3331.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4377909/normal_5f8b0d0245e93.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366011/normal_5fbc9649a5958.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4393890/normal_5f9e4e46741dc.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4391314/normal_5fa172dce265e.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4456660/normal_5fa1defe1c156.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4379379/normal_5f97d713c5c32.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/wumodukubaru/9th_grade_biology_final_study_guide.pdfIn PDF document text
- https://s3.amazonaws.com/mamukawaxatali/salah_bukhatir_quran.pdfIn PDF document text
- https://s3.amazonaws.com/fasanag/abiotic_and_biotic_factors_worksheet_answer_key.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_off0000c9ad.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC9AD	5392 bytes
SHA-256: `940384748cf330f12cfd8bcbb7f02e30eb2635c01d195e9863daeb07ea015c6d`
`font_01_sfnt_off0000dbe6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDBE6	10320 bytes
SHA-256: `5a8b2d3b3a36a9bc5c3473b41ffa707230a1a3c8d45c75cea2088e05208209a0`

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