PDF malware analysis — malicious · 1ddcbd353f47cb83

MALICIOUS

PDF

68.6 KB Created: 2020-11-18 04:45:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26

MD5: 92c9bed50a7020d5bd7f59df55bd87d2 SHA-1: 17a49c92d740f8431020813b9e2c86e0bbabf4b3 SHA-256: 1ddcbd353f47cb83edcc06ec0ee6126cd88d6e6d8127fde40c06efbdfcdefd82

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The presence of embedded URLs, specifically 'https://traffnew.ru/123?utm_term=between+subjects+design+advantages+and+disadvantages', suggests a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF_URI heuristic indicates the potential for malicious links within the document.

Machine Learning

Nyx PDF Classifier malicious score 0.9995

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://traffnew.ru/123?utm_term=between+subjects+design+advantages+and+disadvantages PDF link annotation
- https://dokakida.weebly.com/uploads/1/3/1/3/131380589/b01fa79.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4383794/normal_5f943f9fbd460.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4406820/normal_5fada1602e641.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4405206/normal_5f969e1d94cad.pdfIn PDF document text
- https://zigizawinowola.weebly.com/uploads/1/3/4/4/134457077/6403865.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/bd17815a-faa3-431d-a761-fc1d41d72f0f/bobcat_753_service_manual_full_downl.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/465d3fb5-097c-476d-b35f-53dc9816bfd2/54911968998.pdfIn PDF document text
- https://s3.amazonaws.com/napejaxosinages/78313443860.pdfIn PDF document text
- https://s3.amazonaws.com/jedaxopopuko/removewat_download_win_7.pdfIn PDF document text
- https://s3.amazonaws.com/nijosinizo/russ_shafer-landau_the_fundamentals_of_ethics.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_off0000cf1a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCF1A	5396 bytes
SHA-256: `9b3e5639081877f89555b942a22956669a213f501ff1d1f28726c60df66460ce`
`font_01_sfnt_off0000e1aa.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE1AA	10508 bytes
SHA-256: `21e98c06d5d91fdc31339c4528e8b0e5ef9dd4d50b7fb46750c3fea65e2962aa`

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