Malicious PDF — malware analysis report

Static analysis result for SHA-256 cace70e051650041…

MALICIOUS

PDF

81.5 KB Created: 2021-02-18 22:28:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: daadd348897c38a5234944ad07a141ff SHA-1: e88b89e584a7005752f1b5fca646ca9b98bbbf05 SHA-256: cace70e051650041875b8d710c1de96abaec965ff1a687b4275db1e9ec19fd81
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, identified by heuristics as a potential phishing or malware distribution vector. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to trick users into visiting a malicious site, likely for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://maypoin.ru/wix?keyword=graham%2527s+law+of+effusion+worksheet+page+25 PDF link annotation
    • http://idealicaitaly.site/oxybutynin_chloride_davis42k0m.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370309/normal_5fd67bdfeaa03.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369165/normal_5fce758d6fd3e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492897/normal_60212ba7bcf82.pdfIn PDF document text
    • http://20970907.net/4462972584985mbi.pdfIn PDF document text
    • http://idealica-it.website/center_point_scope_3-9x32_manual2oion.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/mosezavor/statistics_cheat_sheet_for_data_scientists.pdfIn PDF document text
    • https://s3.amazonaws.com/jadudusujuje/apache_maven_3._5._3_for_mac.pdfIn PDF document text
    • https://s3.amazonaws.com/mejawiwomak/kodezexakuxixu.pdfIn PDF document text
    • https://s3.amazonaws.com/gulapore/chak_de_india_song_songs._pk.pdfIn PDF document text
    • https://s3.amazonaws.com/xifabilejilab/89070452386.pdfIn PDF document text
    • https://s3.amazonaws.com/xomudufe/voltage_transformer_ratio_n.pdfIn PDF document text
    • https://s3.amazonaws.com/pevarijidasalop/fundations_alphabet_cards.pdfIn PDF document text
    • https://s3.amazonaws.com/sefukirexuwekij/software_knowledge_transfer_plan_template.pdfIn PDF document text
    • https://s3.amazonaws.com/kefodek/ragob.pdfIn PDF document text
    • https://s3.amazonaws.com/dojivewobasuval/agile_functional_requirements_template.pdfIn PDF document text
    • https://s3.amazonaws.com/jiguwuzobozobaz/laparogabunuz.pdfIn PDF document text
    • https://s3.amazonaws.com/mefonevimimix/3759490860.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_off00010185.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10185 5792 bytes
SHA-256: 1a98240321bb4b312eff25f32583e6c1f4ccb3be6b4dd10fff48c7280ccb0858
font_01_sfnt_off00011539.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11539 10396 bytes
SHA-256: 30829c2dc19f5efb2fdd36e38c8edabe536040a71972c800f22005e42e846216

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