Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d71e27989fd0641…

MALICIOUS

PDF

78.9 KB Created: 2020-12-06 05:31:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: ac5144f95d2b659df70ed79f8ca03ed5 SHA-1: 20de2577fb2cd2456e60be05bc57cb70fe212df5 SHA-256: 2d71e27989fd06412b7c05c270d732bd03ecf8de60d52c98312e530f756dc5e4
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/strik?utm_term=the+new+geography+of+jobs+moretti+pdf In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc19ab11452f90b7fea4d21/t/5fc3c30f9b1ed035385011d6/1606664976070/bedisefuwinuto.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe2003173fb5383b6aed99/1606295556268/metal_bunk_bed_manual.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc165e488c99b6d37aa9f7e/t/5fc6a9e7173fb5383b8fb802/1606855143879/bolobib.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b1359eaa-0c27-4395-9aea-f88185d85f00/wolugivilunewu.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc302a66b97992eb569afe6/t/5fc785a5b2fa4660c8d6dce1/1606911398459/woody_99_sudoku_block_puzzle.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3fa3ad69-12c3-43ed-9870-f51dc8bf0872/3774141894.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60b39b36-9d35-483e-9c28-d06ebf745adc/burezepefemukogo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d6d4be7-d396-4707-8dce-02115f6fe72c/vutubutomo.pdfIn PDF document text
    • https://s3.amazonaws.com/towakog/kuvotes.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc4dd50cd1e280355ed8dff/t/5fc6d6761d689b68bf895016/1606866551440/hot_wheels_ultimate_mega_garage_instructions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a2ee6f0-f9b8-46ac-9dfd-49f455feaa74/nexulodudabuzadu.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d960.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD960 6720 bytes
SHA-256: 43927c5f234241a04b9daed94f8597621bcf1dd83712257f079fd7637642545a
font_01_sfnt_off0000f01c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF01C 5780 bytes
SHA-256: 48155501a727599a7b3a4f57ffac28e858e9e0daa92ca8f18c6a4f5a6996ab51
font_02_sfnt_off000103b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103B8 13524 bytes
SHA-256: 0fa40826b9f1fbabb1bd123281634aefe6391941fc2423e875ead271f85bf321

Open this report in the interactive analyzer, or submit your own file for analysis.