Malicious PDF — malware analysis report

Static analysis result for SHA-256 9cbf41b663f2ea87…

MALICIOUS

PDF

72.2 KB Created: 2021-05-25 04:45:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: aeb42e9951509287f3dd0f5771286bf1 SHA-1: 969050a6e33ea8e6d62f3c7dc1a61c2dba39d8c8 SHA-256: 9cbf41b663f2ea878f4ff8747edf38675933515de03b8d9345e757ece8f6af1c
156 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, suggesting it's part of a link farm or phishing operation. The primary URL, https://mezovuduw.ru/strik, is likely used to redirect users to malicious content, possibly a phishing page or a downloader.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://mezovuduw.ru/strik?utm_term=best+online+yoga+classes+for+beginners+uk PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4383798/normal_5feccbcaf130c.pdfIn PDF document text
    • https://tazanuna.weebly.com/uploads/1/3/5/9/135977230/rubirofujelaxi-bejojew-fuxetevag.pdfIn PDF document text
    • https://nadenekaf.weebly.com/uploads/1/3/0/7/130739264/246858.pdfIn PDF document text
    • https://sugulone.weebly.com/uploads/1/3/2/7/132740418/wokojoxogirabovis.pdfIn PDF document text
    • https://zamamuxito.weebly.com/uploads/1/3/4/2/134234866/608501.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375716/normal_6039d9e1d4b70.pdfIn PDF document text
    • https://runufegoxow.weebly.com/uploads/1/3/5/3/135347372/duzanoke.pdfIn PDF document text
    • https://xugimitedekilim.weebly.com/uploads/1/3/1/4/131482884/53074a87e1a.pdfIn PDF document text
    • https://vematonejos.weebly.com/uploads/1/3/1/3/131383464/8848420.pdfIn PDF document text
    • https://xebikazogede.weebly.com/uploads/1/3/2/7/132740990/sarofapagedora.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/kiremefegonar/towazijuso.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e6796def-a714-4903-aaf8-0603cc095f33/continuing_personal_development_planner.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d5f42ed-0c52-4b82-8a2c-05e858eb58dc/what_is_meant_by_accounts_payable_aging_report.pdfIn PDF document text
    • https://s3.amazonaws.com/gofiguj/whats_that_song_from_tiktok.pdfIn PDF document text
    • https://s3.amazonaws.com/dazuxujepov/environmental_sustainability_plan_template.pdfIn PDF document text
    • https://s3.amazonaws.com/rojalexipokadaz/lovomefobokevo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b193b5fb-e4fd-4119-947d-5e538e06e35a/jedujamabulubovejuxaj.pdfIn PDF document text
    • https://s3.amazonaws.com/minaxigevani/jejulipa.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_off0000ddd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDD3 5404 bytes
SHA-256: 3b75d057be1d1a0f6ce0a7099906013df1356339831d2ac492b450b133576850
font_01_sfnt_off0000f05e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF05E 9788 bytes
SHA-256: f75dcc76328636b6aa5abecac4f9013a4eae5f8f93a3df9ebe79b5dc561f02f0

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