Malicious PDF — malware analysis report

Static analysis result for SHA-256 3eb26ee7d95056e1…

MALICIOUS

PDF

70.5 KB Created: 2021-03-14 02:24:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 214b9284d95e7b92e0319e9517c727f4 SHA-1: 58553841343e8d836e91e8a6f13a02d9c51bc688 SHA-256: 3eb26ee7d95056e13c265fc4cef1b1f0027e53c454f3d5a73d3db12c51cb6c61
156 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 embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

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://xezojetit.ru/wix?keyword=bellagio+nail+salon+gainesville PDF link annotation
    • https://cdn.sqhk.co/fegokirar/8igjfje/head_soccer_championship_2020.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486775/normal_5fc90824232d3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409827/normal_6001d42057aeb.pdfIn PDF document text
    • https://cdn.sqhk.co/susiwozobo/igihgVk/92145000019.pdfIn PDF document text
    • https://latitatuforuza.weebly.com/uploads/1/3/1/3/131398212/majebovigepidi.pdfIn PDF document text
    • http://duwinijuj.mypressonline.com/72145567484.pdfIn PDF document text
    • https://pizotiwedif.weebly.com/uploads/1/3/4/8/134868845/04a05.pdfIn PDF document text
    • http://kawafopi.mygamesonline.org/ronojapetitokawesepa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376096/normal_60065f709cd92.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463788/normal_601b03b7aa368.pdfIn PDF document text
    • http://manibupefif.mypressonline.com/50_essays_that_worked.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443594/normal_5fcae4f5cb5e6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418584/normal_5fee86ecdb5ff.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388814/normal_603371c5aa01f.pdfIn PDF document text
    • https://zeraxoxuret.weebly.com/uploads/1/3/4/6/134642117/xitexetuvokuriruxeb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://eee7329a-c4d5-4508-a8fd-a8ba515f7d9f.filesusr.com/ugd/5ed802_2f7c5ac578af4390994afb58b7aa5f66.pdf?index=trueIn PDF document text
    • https://6776ac3f-883f-499f-bc52-38dff818ec46.filesusr.com/ugd/969751_e4d0888433884f0c867ec4fee17a785a.pdf?index=trueIn PDF document text
    • https://68420551-d949-41c4-975b-2ae86aa6d062.filesusr.com/ugd/09c3c7_9422f369f1e9462f830cb347ee98c970.pdf?index=trueIn PDF document text
    • https://b1c30c75-ab46-439a-884d-3836ae4b8a49.filesusr.com/ugd/2d1648_e9dbf633bf8f4de6ae0547874321b784.pdf?index=trueIn PDF document text
    • https://12a3aa02-022d-4218-8efb-90aa4388683d.filesusr.com/ugd/6dfd9b_2137c6039b4c401fbabe6ff93abb4a1c.pdf?index=trueIn 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_off0000d671.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD671 4864 bytes
SHA-256: f0e65b1b91e0253510a3e63c8122cf466d8dd7a6e6abba2c945adeb662992cce
font_01_sfnt_off0000e721.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE721 11168 bytes
SHA-256: 46c59e39677ae2d2a312ee94290e4f0b51fef9e1c8d507db90a7e16d384fa793

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