Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0ad53f1892f8247…

MALICIOUS

PDF

69.8 KB Created: 2021-05-19 22:59:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 3606bcf654664d3de3d98fc3bb11d0f2 SHA-1: 5ab08aca42065908135461ed08e5ec4c854c6af2 SHA-256: e0ad53f1892f82479431d9529cde70fe30d19eccd7006b4289d72a6622ee66f8
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-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://dugedepap.ru/strik?utm_term=lean+manufacturing+luis+socconini+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4377113/normal_5ffe87b18a22c.pdfIn PDF document text
    • https://lepamatizetu.weebly.com/uploads/1/3/0/7/130739269/biguda_vopejo_jexoxuzukuneda.pdfIn PDF document text
    • https://delutezebojuk.weebly.com/uploads/1/3/4/3/134353455/xavun.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487419/normal_602ff619a4512.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455657/normal_5fde4a9739eae.pdfIn PDF document text
    • https://baxuzenaxifo.weebly.com/uploads/1/3/2/6/132681834/43b03d784c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457298/normal_6018f6d0ae23a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407552/normal_60113546f3082.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495976/normal_5fd6471c1c398.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375690/normal_5fe8e4a09384d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372702/normal_6050d6c570c46.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/vidadaviwal/jaxulamefovajo.pdfIn PDF document text
    • https://s3.amazonaws.com/xujitezu/damaputetafitan.pdfIn PDF document text
    • https://s3.amazonaws.com/gonafoziguwewe/49223800668.pdfIn PDF document text
    • https://s3.amazonaws.com/mokixetat/brunella_school_uniforms_wodonga.pdfIn PDF document text
    • https://s3.amazonaws.com/zagubip/design_book_cover_online_free.pdfIn PDF document text
    • https://s3.amazonaws.com/xiwevitox/wagifonemavikuza.pdfIn PDF document text
    • https://s3.amazonaws.com/kudowo/15925319060.pdfIn PDF document text
    • https://s3.amazonaws.com/kozibowisenatu/wizezidavesivexalivemifum.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_off0000cf6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF6B 5416 bytes
SHA-256: 16b208bb24bd67aa0001113862944da658da51e0de7a7b94dc3744f162540df8
font_01_sfnt_off0000e1c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1C6 11584 bytes
SHA-256: ac8482ce25570ec01f2e9e31a89154f7225b94179c6b508e32ff38dab7184041

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