Malicious PDF — malware analysis report

Static analysis result for SHA-256 0204c97310f1580a…

MALICIOUS

PDF

70.6 KB Created: 2020-12-30 01:12:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 5edd77a4d13c1b85a6f1acd71e3ca8a5 SHA-1: 364c5e08086ec04407e5091653183387ccaf483e SHA-256: 0204c97310f1580a59aea0d7fe7bb08839fcb7caf81e7eb6494233d89b6e7274
96 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as 'Pdf.Phishing.Trojan' and a machine learning classifier assigned a high probability of maliciousness. The document contains an embedded URI pointing to 'https://traffset.ru/123?utm_term=amanda+bobby+cooper+ultimate+fighter', suggesting a phishing or redirection attempt. Although no scripts were explicitly extracted, the presence of embedded URIs and the nature of the detection indicate a likely attempt to lead the user to a malicious site.

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://traffset.ru/123?utm_term=amanda+bobby+cooper+ultimate+fighter PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4407988/normal_5f9d1076e28a6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371010/normal_5fd1246c7f9b8.pdfIn PDF document text
    • https://cdn.sqhk.co/foxidagon/ieExjio/green_bay_packers_chicago_bears_live_stream.pdfIn PDF document text
    • https://cdn.sqhk.co/sakixowofeg/hjbgdid/taptap_heroes_codes_october_2020.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416935/normal_5fb3fbb23bcea.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443809/normal_5fa7c15075bb3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487897/normal_5fdf1591ef3d0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418991/normal_5f97ebca167d2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427795/normal_5fb7c2d3a01c3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381762/normal_5f9c579b5dcf8.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/xukonakefules/best_fly_fishing_guides_in_arkansas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/30491f36-5617-45fb-bd5c-e99cde6994e4/jd_salinger_short_stories.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6dd23b6a-0c1b-4762-9399-45471f060039/14691857169.pdfIn PDF document text
    • https://s3.amazonaws.com/ditiruz/definition_of_it_infrastructure_department.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_off0000d54d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD54D 5624 bytes
SHA-256: 6943bd0b3ae1fb7d7e3a9c2a866a52d513b22004e8857afe07c6b544c2e7e968
font_01_sfnt_off0000e849.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE849 11040 bytes
SHA-256: 8b068e2aff89c27a069d75de16199460d5d78c6576e36906d2d1c14e55f1e18f

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