Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d01fb3d73d40309…

MALICIOUS

PDF

77.3 KB Created: 2020-11-27 12:07:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 5fa5ddfd2a91db80aed92840e0f51a12 SHA-1: 42bc072b969b9f4163b03dae57029da9e40a3849 SHA-256: 6d01fb3d73d4030915d4a286562c0379aae13541ce486af40e37e12258506a1c
94 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link pointing to 'https://gettraff.ru/aws?utm_term=job+description+template+for+marketing+manager'. The document body, though heavily obfuscated, suggests a lure related to a job description. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the presence of a malicious redirector URL is a high-priority indicator.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 3

  • 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://gettraff.ru/aws?utm_term=job+description+template+for+marketing+manager In PDF document text
    • https://cdn-cms.f-static.net/uploads/4460060/normal_5fada8ae07795.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365657/normal_5f9002ade1ebe.pdfIn PDF document text
    • https://juzugimigiroteg.weebly.com/uploads/1/3/2/3/132302883/8049581.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424040/normal_5f981d910104d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492294/normal_5fbf2665c2962.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366309/normal_5fab6a5c07fc5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369160/normal_5f9857cee4ad6.pdfIn PDF document text
    • https://fusajebotiv.weebly.com/uploads/1/3/4/3/134320253/76208d11c3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387924/normal_5f9c3977e956b.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/gifojuxaxeva/baregavasidif.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/49ed497d-11a6-49b8-bab6-88e7293ac2a7/kasisofufeginatita.pdfIn PDF document text
    • https://s3.amazonaws.com/numunenoji/opening_a_dell_dimension_3000_case.pdfIn PDF document text
    • https://s3.amazonaws.com/pewebopufupe/47796683745.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/85c6a611-13a7-4aa3-bfe7-d412abe038f2/95870747278.pdfIn PDF document text
    • https://s3.amazonaws.com/xojafemori/vigisopifito.pdfIn PDF document text
    • https://s3.amazonaws.com/novifamigot/ttr_data_recovery_services.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_off0000ef56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF56 5668 bytes
SHA-256: bdb2632231dacafc90f539321173a94c13987f3c55288e6b870942e393101256
font_01_sfnt_off0001028c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1028C 10936 bytes
SHA-256: cc4a5f7ac7e721c21886f42c60e6ee53c4fc014a29cc328246a217641e93cbf9

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