Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a6ee6c2dd21989f…

MALICIOUS

PDF

70.2 KB Created: 2020-11-20 11:02:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: bb3f2bfd65385a9c5ec07a6dcb17e4d2 SHA-1: 4fd3fcc9b799aa5aba7c7c3896980bd9be84955c SHA-256: 8a6ee6c2dd21989fdf8ec74a9df92d1fd648017aff29a307d3097b58cb9864e6
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The presence of an embedded URL pointing to 'traffnew.ru' suggests a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URL are strong indicators of malicious activity, likely related to spearphishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/aws?utm_term=c+m+h+o+ka+full+form PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4487186/normal_5fa8febee1d75.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366362/normal_5f889e8dcf033.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420034/normal_5fa59af15829d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389586/normal_5f8e0a838c786.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414696/normal_5fa6ce8fe4bcf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369631/normal_5f9851d67e35d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://uploads.strikinglycdn.com/files/2408640a-2add-474d-9e1f-4a73872be007/catedral_de_beauvais.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d6b09d6d-b1ea-487f-b258-beac7946e402/aoks_and_woks_tok.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3fd6a505-23d3-4f1f-aae7-b238199a9906/vojalibiv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/722d38a2-3b0a-44c6-8a5b-a6c0fc2f5a34/cuadro_comparativo_culturas_mesoamericanas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d69f07ed-7760-472b-b370-15a90b367dec/google_website_search_console.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e966944-b0f5-4109-bba0-4c062b50bf68/50257425694.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.

FilenameKindSourceSize
font_00_sfnt_off0000bb83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBB83 4800 bytes
SHA-256: ed7eca106e6dcfd216731753bc8bcac0efa8c8a52d28e4c62af5e2a82c1842ce
font_01_sfnt_off0000cba2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBA2 9976 bytes
SHA-256: 4d62e825b282773cbede4db33384292f28e7fd7cdfb1106c266e7951b51db542
font_02_sfnt_off0000edbe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDBE 9616 bytes
SHA-256: b20c0339a7c40f621064cda5f8394f30f50691d737f72a9e7164a3c106b61e44

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