Malicious PDF — malware analysis report

Static analysis result for SHA-256 3cc8820519da420f…

MALICIOUS

PDF

68.2 KB Created: 2020-11-10 03:05:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 1ff45c7937efc8faa9b2fa7630b71c38 SHA-1: 9cbca33933188c40c5477d42817273956f8097c7 SHA-256: 3cc8820519da420fa752589e65e6f4bfc9ddaa834d15c0d44d73f84bb35b7472
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'trafftec.ru', which is likely a phishing or malware distribution site. The document body, though heavily obfuscated, contains text related to 'Southeastern metal products' and the authoring application, suggesting a lure to a malicious URL.

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://trafftec.ru/strik?keyword=southeastern+metal+products PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4418178/normal_5f9c5561ea142.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423728/normal_5f9d78c53fe99.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366666/normal_5f875ec67c72b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405650/normal_5fa2edb2670a6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366331/normal_5fa66b3c8a41c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366312/normal_5f8f24091aa8b.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/455247c1-7492-4a18-9d0e-f98871713acf/galavodabi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b19679ff-20ab-4940-819a-3eb495d84899/livopapufitit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b5ad609f-9d04-45d6-b2c5-a18940e8ba19/dasikokonejuxaruze.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/47e8007f-c225-49b0-8ffe-112ba45db5d6/dejoturosidibilu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c41efbad-499b-4b0c-97eb-afe9106d5039/return_to_vendor_process_in_sap.pdfIn PDF document text
    • https://s3.amazonaws.com/panalipolifod/canon_lide_300_scan_multiple_page.pdfIn PDF document text
    • https://s3.amazonaws.com/wizuluworafid/merejagol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d95c981-3d57-4657-890f-4a856dcfccd6/4602027830.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.

FilenameKindSourceSize
font_00_sfnt_off0000cbc9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBC9 5416 bytes
SHA-256: c436a5766b7043e71491ea7cb8cb72742f79f147126963e6702861d301f5eab2
font_01_sfnt_off0000de07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE07 11108 bytes
SHA-256: 924b1e1c3bc3d62be4558613c9732717358d9e35beab5c1263a9011199af551a

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