PDF malware analysis — malicious · 56bf4cd24a6a82d0

MALICIOUS

PDF

76.2 KB Created: 2020-12-27 12:45:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16

MD5: 476bda16a302658e33ab9915bf4620e3 SHA-1: 9ea8f2fa53fa446527a4456cc33e95755e354a5d SHA-256: 56bf4cd24a6a82d0c46049407498dd310b20b31cf24cb7d7258dcdfb0e80c2b8

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The 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 'trafffe.ru', which is likely part of a phishing or malware distribution scheme. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to malicious content.

Machine Learning

Nyx PDF Classifier malicious score 0.9960

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/strik?utm_term=beer+pong+table+dimensions PDF link annotation
- https://dibulikari.weebly.com/uploads/1/3/4/2/134235408/8399393.pdfIn PDF document text
- https://cdn.sqhk.co/zolaxadivowe/a7t4sid/soccer_live_score_apk_download.pdfIn PDF document text
- https://cdn.sqhk.co/gaxumisi/kJxmMhg/3940578000.pdfIn PDF document text
- https://lenimupet.weebly.com/uploads/1/3/4/0/134013040/7786561.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4412388/normal_5f934e0451f51.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4380082/normal_5fa1102bdfe19.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369168/normal_5f91bf10bf0c0.pdfIn PDF document text
- https://junujejamuzila.weebly.com/uploads/1/3/1/6/131607305/4613739.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://uploads.strikinglycdn.com/files/cb391033-bb8b-4d10-843e-b99fe2de4b48/41989736074.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000ddad.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDDAD	5256 bytes
SHA-256: `f5fb436c28ba2557b1157993e68db33ade659e25bb63a80ceeb5fa2d16aa57c7`
`font_01_sfnt_off0000ef5d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEF5D	11392 bytes
SHA-256: `87ff5eaad70247cbc22040d249f5bd7cc03d90fe5d42cdc98a470fb00bf5cb7e`
`font_02_sfnt_off000115ff.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x115FF	4324 bytes
SHA-256: `cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34`

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