Malicious PDF — malware analysis report

Static analysis result for SHA-256 0eda5f9d9f3e6d0b…

MALICIOUS

PDF

77.6 KB Created: 2021-03-31 23:37:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 389c0555565eb845dc6a3ce51754b460 SHA-1: b3656734ad4eb2b40e24b4bd40832c7fb528a3c8 SHA-256: 0eda5f9d9f3e6d0b2080be45f512ac868b682260e36923ad214dd9b1de7cd7cd
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a URL that appears to be part of a phishing campaign, disguised with keywords related to medical treatment. ClamAV and ML classifiers also flagged this file as malicious, indicating a high likelihood of malicious intent. The presence of embedded URLs suggests an attempt to redirect the user to a malicious site, likely for credential harvesting or further malware delivery.

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://jumiwimov.ru/award?keyword=lobular+carcinoma+in+situ+treatment+pdf PDF link annotation
    • http://telgrm.site/5285823358450uy1.pdfIn PDF document text
    • https://cdn.sqhk.co/xawobovuji/fjjihhe/58566940133.pdfIn PDF document text
    • https://cdn.sqhk.co/zezugiwetibe/bdxIrpU/ecru_jeans_womens.pdfIn PDF document text
    • https://cdn.sqhk.co/moxoxitij/iahjhcN/nail_art_designs_at_home_without_tools.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422877/normal_605376e97fee9.pdfIn PDF document text
    • http://50offstore.info/what_are_the_coso_componentsf3xn0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369503/normal_604b0bd843e74.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478415/normal_6029959228047.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444358/normal_5fda62c875128.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450045/normal_5fe4888e16967.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445749/normal_60482b9b6c609.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373264/normal_6058001366941.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474205/normal_5fded568e5e3f.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/tokudapele/24605062982.pdfIn PDF document text
    • https://s3.amazonaws.com/topipovikapari/fagefe.pdfIn PDF document text
    • https://s3.amazonaws.com/lorerexeg/jowumu.pdfIn PDF document text
    • https://s3.amazonaws.com/rezugekolaba/2006_honda_civic_ex_owners_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a49ed5e-37da-4a3f-a721-a5d8b1038395/42012130514.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5206e87a-8f24-44f4-8de9-ad4974a8c7b3/33559106624.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_off0000f417.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF417 5384 bytes
SHA-256: 936cf112befe5101eb65ca329931873508e605ca291c8f7446b6c9839b856ac9
font_01_sfnt_off00010649.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10649 10292 bytes
SHA-256: 4babc36f59958701185a170d8830324e483512fe7c8bee9d916594653e831b2d

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