Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a27352adac2e2a9…

MALICIOUS

PDF

74.2 KB Created: 2021-02-06 09:54:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 2b2572474b523abc7d10d7b1f0c2a09e SHA-1: 9562c3fdf943c32e205889459954872118743c0e SHA-256: 8a27352adac2e2a99fcfb9c6e452e8c657e6f78e9434b080636438550272f6f8
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains embedded URIs pointing to external websites, suggesting a phishing or credential harvesting attempt. The presence of PDF-specific heuristics further supports its classification as a malicious PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://leonvi.ru/aws?utm_term=soil+erosion+and+deposition+pdf PDF link annotation
    • http://lasleymarkt.ru/wesuxapafusoshboe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451760/normal_5fe866b4a855b.pdfIn PDF document text
    • https://tojuxumisadef.weebly.com/uploads/1/3/4/7/134714483/bibajokevir.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413240/normal_6005e5271fb79.pdfIn PDF document text
    • http://dezlice.ru/woodworking_projects_that_sell_ukgbydi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446030/normal_600b8c479569e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385852/normal_5ff7a2f25a99e.pdfIn PDF document text
    • http://gbarb.me/police_scanner_app_for_pcwr4aq.pdfIn PDF document text
    • http://hrushch.space/asteroid_bennu_size_in_feetli5bv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4458413/normal_5fcb6dc47326e.pdfIn PDF document text
    • https://zififawatef.weebly.com/uploads/1/3/4/3/134384507/5601886.pdfIn PDF document text
    • https://betirowi.weebly.com/uploads/1/3/4/6/134661799/buzovefekakorovu.pdfIn PDF document text
    • http://yourdesk.website/terjemahan_kitab_al_bayanttbqp.pdfIn PDF document text
    • https://wevejabunom.weebly.com/uploads/1/3/1/4/131406075/6769c230.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/lijulijowivaze/65909332894.pdfIn PDF document text
    • https://s3.amazonaws.com/faduxodiwo/84526247904.pdfIn PDF document text
    • https://s3.amazonaws.com/xazarujokemus/boots_ameliorate_transforming_body_lotion.pdfIn PDF document text
    • https://s3.amazonaws.com/folexapurilowe/renal_tubular_acidosis_guidelines.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_off0000e4f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4F6 5136 bytes
SHA-256: e7ecc49d30cf60361bdaf994893966dea7e4d508774b0048786cd6e6bbc7364b
font_01_sfnt_off0000f677.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF677 11328 bytes
SHA-256: fd52eae5415f536025a1de0f64a2bbc40e60a5bafb9bd955c5c3dae7d55e475f

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