PDF malware analysis — malicious · 76dc5932b2c95817

MALICIOUS

PDF

74.8 KB Created: 2021-01-09 14:59:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27

MD5: 86345aa289d98a417ff3b2ec0bdcc828 SHA-1: eb0bdd2fee6d7d78d377a98144a23096567f75f5 SHA-256: 76dc5932b2c95817232876cdbcccb0ed5d5b6cd73fb4a904001d3c079460f59f

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of an embedded URI pointing to 'traffnew.ru' suggests a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a malicious document, likely delivered as a spearphishing attachment.

Machine Learning

Nyx PDF Classifier malicious score 0.9979

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://traffnew.ru/123?utm_term=elizabethan+curse+words PDF link annotation
- https://cdn.sqhk.co/waxipefimafa/Xljdjf6/service_project_ideas_for_nhs.pdfIn PDF document text
- https://lutenidu.weebly.com/uploads/1/3/4/3/134398581/f1b50f9456fc.pdfIn PDF document text
- https://dujuwugad.weebly.com/uploads/1/3/4/7/134721680/525b52cd.pdfIn PDF document text
- https://cdn.sqhk.co/rawerusiwala/zVBibLH/27564296039.pdfIn PDF document text
- https://gavixidosoxadi.weebly.com/uploads/1/3/0/7/130776067/zokup.pdfIn PDF document text
- https://cdn.sqhk.co/tewisifupib/hheMSOn/msi_afterburner_oc_scanner_1080_ti.pdfIn PDF document text
- https://vakenufepuxino.weebly.com/uploads/1/3/4/5/134529081/4506760.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4505096/normal_5fdf8ae546015.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://s3.amazonaws.com/xuzed/sapna_choudhary_ke_gane_djpunjab.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_off0000db10.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDB10	5148 bytes
SHA-256: `de7bd3f210615c45734dc16c262bd0898d2d12f93ba6b6d5110e260fc9b84d1b`
`font_01_sfnt_off0000ec8e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEC8E	10704 bytes
SHA-256: `13b8a54dda14ffab6893d8bbdbc7c939c07c821d506a7436b23abdda6d42da0d`
`font_02_sfnt_off000110f1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x110F1	4324 bytes
SHA-256: `d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378`

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