Malicious PDF — malware analysis report

Static analysis result for SHA-256 554e5bca1bb33d08…

MALICIOUS

PDF

70.2 KB Created: 2021-03-27 16:12:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 569d43ad021ef0ebb33343784ebc0aa9 SHA-1: 14a0d4565ae36f85484d1b865f5277f3aaa73793 SHA-256: 554e5bca1bb33d088faff4776740cc3c98384ce6ee53b6ab6c6bd710c08accb7
96 Risk Score

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 external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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://gimoguvi.ru/wix?keyword=the+grand+opera+house+events PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4448337/normal_602398d88fb3f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492600/normal_602ee6a965a66.pdfIn PDF document text
    • http://koreanluxe.com/toefl_practice_test_with_answers6pme8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482863/normal_602d88f053378.pdfIn PDF document text
    • http://scarcebook.com/60821670390eudqk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415782/normal_600c8fcbc8c03.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/f168a82e-ad68-4e44-a69f-bd1b2435e920/rimas_y_leyendas_gustavo_adolfo_becquer_resumen.pdfIn PDF document text
    • https://s3.amazonaws.com/zalomi/s_letter_beautiful_images.pdfIn PDF document text
    • http://wokupubax.epizy.com/nuxow.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/992f42af-90ed-4617-ab57-8a1e013efca7/kosinume.pdfIn PDF document text
    • http://vubepet.epizy.com/can_you_still_get_a_flip_phone_from_verizon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/26a3de11-143e-480b-b0e3-9df1be1a4f69/nulaxuwakudo.pdfIn PDF document text
    • https://s3.amazonaws.com/xukanomarexumu/xevuwizigetifofirenosoz.pdfIn PDF document text
    • https://s3.amazonaws.com/jeworurowam/95426416160.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_off0000d37a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD37A 5200 bytes
SHA-256: ee367e6715b8f6bff9549c55210ea84589e3781afc6f6783d3b01fe7ced0ee69
font_01_sfnt_off0000e52d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE52D 11288 bytes
SHA-256: 322c80ce88c7152cfc187034182192199ace61b3abb4ce7e77c7c6e57a634fca