Malicious PDF — malware analysis report

Static analysis result for SHA-256 f364d472a8078fab…

MALICIOUS

PDF

71.9 KB Created: 2021-02-11 07:40:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 2b492427dcf35cab337f849da4424139 SHA-1: fa40ed265a938213e8023e18813af3917763aaf9 SHA-256: f364d472a8078fab468ed46c9968c9371eb8d749c075782b554eb40ccfe568e8
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, indicating a phishing attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URI are indicative of a phishing lure, likely designed to redirect users to a malicious site for credential harvesting or further malware 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://baarspo.ru/aws?utm_term=acta+constitutiva+empresa+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4426677/normal_5fdd5fd807ac7.pdfIn PDF document text
    • http://hookup157.online/ise_byod_configuration_guideouf1o.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382629/normal_5fe781325e592.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494166/normal_60139fee313e1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418381/normal_5ffb22e113f06.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459320/normal_5fedeb3737857.pdfIn PDF document text
    • http://oneitstore.info/96325670915nm7uj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402964/normal_5ff9b77a28a3a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453117/normal_6005d8dc00285.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366007/normal_5fda28ad24f69.pdfIn PDF document text
    • http://lofokumado.22web.org/interesting_facts_quiz_questions_and_answers.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379618/normal_5fea396cc9084.pdfIn PDF document text
    • http://lnstagrambusiness.com/best_live_wallpapers_for_android_2020bgekn.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391634/normal_5fc8bf696882f.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/zuvovoxigumuz/gexazeguwidu.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_off0000d9a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9A9 5316 bytes
SHA-256: d8f8b8f416fdf9cd0f444162c1ec4d6493fe0c8e6599b1f8a593ba9f8f1a52cc
font_01_sfnt_off0000ebae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBAE 11604 bytes
SHA-256: eeda433182761a7591ee7b5b28612e703bc1604305fca5d00440296a28770665