Malicious PDF — malware analysis report

Static analysis result for SHA-256 eccbc0dd9663a751…

MALICIOUS

PDF

79.0 KB Created: 2021-02-24 02:28:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: a336cf7a8be12a7337eed0253fa4eae3 SHA-1: 9b774fd5d9f050444f6538afa200ea4bc990d9c5 SHA-256: eccbc0dd9663a7510c75ebc9cabf7e65e2ea1dacbf52911c2370d2c8b43db226
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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 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://druttle.ru/123?utm_term=tabla+peri%25C3%25B3dica+con+elementos+reales+mercadolibre PDF link annotation
    • http://nature-ital.space/jixefiwug7z93.pdfIn PDF document text
    • https://sofovelo.weebly.com/uploads/1/3/1/3/131379060/b2dd14926157824.pdfIn PDF document text
    • https://cdn.sqhk.co/ralapogifur/e8x2ibw/xipomavorejik.pdfIn PDF document text
    • https://cdn.sqhk.co/tesosunimew/hejhiet/matte_black_crackle_nail_polish.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446770/normal_5fccb556e2932.pdfIn PDF document text
    • https://mulokigapasol.weebly.com/uploads/1/3/1/0/131070847/fixipazofuxotakowa.pdfIn PDF document text
    • https://cdn.sqhk.co/bawusipa/hahaiit/fatebijowikol.pdfIn PDF document text
    • https://kaperimivegorew.weebly.com/uploads/1/3/4/3/134371305/57717.pdfIn PDF document text
    • http://fokugalerevigof.iblogger.org/xufisugukumewavep.pdfIn PDF document text
    • http://santand-es.com/bepobelavupuxbn5.pdfIn PDF document text
    • https://fanuwatesovize.weebly.com/uploads/1/3/1/3/131380837/ddbfe83a.pdfIn PDF document text
    • http://vurolak.iblogger.org/worksheet._cells._value_vba_excel.pdfIn PDF document text
    • http://flipping-car.online/livros_sobre_cabala_emppsfw.pdfIn PDF document text
    • https://cdn.sqhk.co/kawinojos/h6Ggiha/kurokepodujasigugozoweput.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://najaxobefirag.epizy.com/bofexinobem.pdfIn PDF document text
    • http://wokikeka.epizy.com/9581016253.pdfIn PDF document text
    • https://s3.amazonaws.com/xafaxotaful/employee_handbook_template_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/kovozenamofox/35168489817.pdfIn PDF document text
    • https://s3.amazonaws.com/dozore/addition_word_problems_year_2_worksheets.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_off0000f116.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF116 5444 bytes
SHA-256: db4aa2815ee238b56244f39eaf813e37cc5b29b9efa5e02c6cd009ff98c02827
font_01_sfnt_off00010336.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10336 12732 bytes
SHA-256: c4fab476f6b9131831c8471f4330a91d88d04eedfa85e64e006d8bb135c41b89

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