Malicious PDF — malware analysis report

Static analysis result for SHA-256 15d90745a56aa180…

MALICIOUS

PDF

76.4 KB Created: 2021-05-29 22:46:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 1273c82e34525db8258c466f85bcb1c4 SHA-1: 40fb4b2e31520a96639573cb2bea05116c9cd4f3 SHA-256: 15d90745a56aa1804fa7cb5e3b0bdd365b9a81d7698684ea18ab4b67a9bfb847
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with a significant number pointing to potentially malicious domains, as indicated by the 'PDF_SEO_LINK_FARM' and 'ML_NYX_PDF_MALICIOUS' heuristics. The embedded URL 'https://xezojetit.ru/strik?utm_term=kanawha+county+circuit+court+records+search' is a primary indicator of malicious intent, likely serving as a lure for phishing or malware distribution. ClamAV also detected this file as 'Pdf.Phishing.Trojan'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://xezojetit.ru/strik?utm_term=kanawha+county+circuit+court+records+search PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4427076/normal_5fdf2ed2a505e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470972/normal_602ce932edb3d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449012/normal_600e896fd057b.pdfIn PDF document text
    • https://kavosimodo.weebly.com/uploads/1/3/4/9/134901779/762461.pdfIn PDF document text
    • https://joxunirefebemi.weebly.com/uploads/1/3/4/3/134319414/9064326.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/a9dea41a-45ee-47b7-8714-d0e79851729c/how_much_do_you_get_paid_a_month_in_the_navy.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3771cb3d-1f43-44de-82df-1492ac2b504b/gomadaxevot.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e8f3a446-cfbd-4116-a1f4-0082cceb1c1e/50673337666.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62c638c6-4475-4bf6-8918-2f6d2fdfdc06/66452703336.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3cda7b71-7a08-41ef-9811-f87577bcaee7/89813123119.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e4914c90-0384-4558-9d21-b86573e808e0/defarawetaxunonitajazim.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/31450859-d771-4848-bf66-ae1328c9c0c5/29_card_game_for_pc_offline.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/83b3821c-a43f-4fb0-b588-faf4e869e50d/74706395204.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/780aa6a2-bb87-4393-b0e5-898f6dc00f7f/21645445448.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/38594241-79ba-4334-b6bc-4447a0cfed0a/how_long_does_it_take_to_cook_a_whole_turkey_on_a_pellet_grill.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/06c6aa69-bb07-404f-86eb-ce7fe5a50d74/jatirimavisajimomukunukin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d26c84b2-9df8-4adc-87c7-c812764ec6d2/24102870776.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a3ea8514-d68c-45df-b22a-58f605b7b91c/12602909563.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6beedcec-3881-4414-844f-dafad8a76158/5389849881.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_off0000eeb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEB2 5160 bytes
SHA-256: 6498c4e165630f59aac80d9bc2e08e54bf4d9645b4db7a66131e1b99b53587f5
font_01_sfnt_off00010053.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10053 10672 bytes
SHA-256: 1373b72d1492aeb45de1d862082b135eca20c59e37bf9aedf28e1e74a925296f

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