Malicious PDF — malware analysis report

Static analysis result for SHA-256 1df60edec4ae8666…

MALICIOUS

PDF

61.1 KB Created: 2020-11-29 18:12:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: ed9c5b02c6199b39bf44d5f76dd8dc83 SHA-1: 288237b70a6fa7ee591e0a9eb308073260ea599c SHA-256: 1df60edec4ae866682b90a2e899c976c8b264d44ca2521d31b65cc21013178bc
154 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by multiple heuristics, including a critical alert for a link to known malicious redirector infrastructure. The embedded URL, https://cctraff.ru/123?utm_term=munchkin+bottle+warmer+parts, is the primary indicator of malicious intent. Although no scripts were explicitly extracted, the nature of the PDF and the malicious link suggest an attempt to redirect the user to a phishing or malware distribution site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://cctraff.ru/123?utm_term=munchkin+bottle+warmer+parts In PDF document text
    • https://cdn-cms.f-static.net/uploads/4375209/normal_5fbf022e4c7e2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406455/normal_5fac4b34da8bb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418370/normal_5fa3c8c4e91fd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488807/normal_5fc04b55f3d85.pdfIn PDF document text
    • https://waxitajoxozaner.weebly.com/uploads/1/3/4/4/134474673/672479.pdfIn PDF document text
    • https://polabufasol.weebly.com/uploads/1/3/2/8/132814050/3251487.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414501/normal_5fbe30c346283.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365580/normal_5fb99e648bd42.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/xupizewuxere/uk_financial_statements_template.pdfIn PDF document text
    • https://s3.amazonaws.com/gosete/temperate_desert_climate_graph.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ec4fdad-e5c2-46f3-852a-eb85b7e251ab/zaxamuzuxa.pdfIn PDF document text
    • https://s3.amazonaws.com/fenatagazise/fiterun.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/818cbec9-95ff-4f25-a933-594e7b0eca38/the_adjusted_trial_balance_columns_of_the_worksheet_for_savaglia_company_are_as_follows.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_off0000b01e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB01E 5472 bytes
SHA-256: 144fd5b77965a57d050d5a16f53b25327d040383807cae4975c7e59cd46eec70
font_01_sfnt_off0000c2ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2AB 10296 bytes
SHA-256: d70d1742a6b4936783f05a7d78897f0f72090a36cb428d9f7ee99132b3759494

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