Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e2e7e6032d010a5…

MALICIOUS

PDF

40.5 KB Created: 2020-10-30 22:13:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 9564df9afc58ec2cee8e9a73081aef3d SHA-1: 32a25fd30f1073dd97e938e4da8565abc0ab2988 SHA-256: 2e2e7e6032d010a51f875e42c6bf2bf92cef9777a86f5324e28acedc2629c831
94 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains a critical heuristic indicating it links to known malicious redirector infrastructure. The embedded URL, https://cctraff.ru/strik?keyword=wartune+sylph+guide+for+mage, is the primary indicator of malicious intent. The ML classifier also strongly flagged this PDF as malicious, supporting the assessment that this is a phishing or redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://cctraff.ru/strik?keyword=wartune+sylph+guide+for+mage In PDF document text
    • https://cdn-cms.f-static.net/uploads/4367674/normal_5f9c1178adb0c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384655/normal_5f8f284eb50ad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391620/normal_5f8e3a1863198.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366993/normal_5f873d1135d16.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/gupuso/pusijavofax.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/17859225335.pdfIn PDF document text
    • https://s3.amazonaws.com/sazixipame/autodesk_revit_mep_2018_tutorials.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c426b0d-2c5b-4a02-85c4-2b86f5c4a525/vogefugomifivi.pdfIn PDF document text
    • https://s3.amazonaws.com/viromibukoleliw/suvukarubenefowatifinuke.pdfIn PDF document text
    • https://s3.amazonaws.com/simujix/samsung_s6_charger_type.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d03abb40-714f-4da1-80c4-f3de18000010/senugitaduxobuv.pdfIn PDF document text
    • https://s3.amazonaws.com/vibuvomomuv/mezenoro.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b845f11-89a7-4e8a-91ef-8997d95b341c/46803767795.pdfIn PDF document text
    • https://s3.amazonaws.com/nigimul/pharmacological_classification_of_drugs_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c40ae87b-e889-442c-80dd-d1a9f314248b/mosiwaxubigiz.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_off00005fe5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FE5 5568 bytes
SHA-256: bf702a0059e2f336b83521f7b1c578603a16b4c693a1421d3ac7f4cf7d12dbef
font_01_sfnt_off000072c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72C6 10080 bytes
SHA-256: 8cbd1fd320583cf656bb12ba44f247857ca39353e4f73e349c389f06714b909b

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