Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ea0947eb53b0651…

MALICIOUS

PDF

86.1 KB Created: 2021-03-13 16:45:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 831ab30c0069ecb5d91dea787aa9040e SHA-1: 76708ddc1a46396b13e1e51bea9ae07ec8d829c7 SHA-256: 1ea0947eb53b06515fd9e3a2156192fe66aabd3574566bf9be897766390b36d9
126 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs pointing to disposable domains, a common tactic for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' suggests the document is part of a larger network of malicious links designed to attract traffic.

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://soxebez.ru/aws?utm_term=why+is+my+hp+printer+printing+blurred PDF link annotation
    • https://cdn.sqhk.co/ruvonusebex/xgCgf7I/94095848660.pdfIn PDF document text
    • http://naturaleone.space/block_diagram_drawing_tool_freexzs4t.pdfIn PDF document text
    • http://xugaguf.mypressonline.com/month_to_month_rental_agreement_template_california.pdfIn PDF document text
    • http://gatorama.space/83265797827bu1tm.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409114/normal_60237d1ac7e0c.pdfIn PDF document text
    • http://siviveko.getenjoyment.net/xaxif.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454672/normal_5fce287146c3a.pdfIn PDF document text
    • http://lbaranaydin.com/lidotudugemofe6o1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366989/normal_5fd331567b0ea.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424010/normal_600d5c7f70e38.pdfIn PDF document text
    • https://cdn.sqhk.co/pabefidinaz/jgLihhd/40908225680.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/1f9b885c-ec68-4e52-9ace-2bc10e6c9817/how_to_scan_for_premarket_gappers_thinkorswim.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2322c6dc-4cbd-4002-bc62-b84617c2170e/best_gmat_books_amazon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cfecc2cf-6a31-4961-950d-0904de24e2e6/crear_hoja_de_vida_sencilla.pdfIn PDF document text
    • http://weponigonimogo.myartsonline.com/zanegebuv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e34da22e-abcf-40e2-9bb5-73eac0de9c63/59300350048.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_off000113a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113A5 5420 bytes
SHA-256: 1b197a89fdbdec975aa29ff188e673c6e29614627da3d410fa3bbe5f9d96772d
font_01_sfnt_off000125f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x125F2 10892 bytes
SHA-256: a3780b84fda871ea41b51cb403db78df8e4670dda2e5bae3f9f3b0e433aa0f07

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