Malicious PDF — malware analysis report

Static analysis result for SHA-256 2725564c4021a7cb…

MALICIOUS

PDF

67.8 KB Created: 2020-12-21 23:59:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 6811f8ad7162ed3ecb60e91cbeebe114 SHA-1: eb77f6cad0a6766049b91e91cecdb3db5cb1ac77 SHA-256: 2725564c4021a7cb43a354b27359b1865490bdf34a5923a1dc3ee68a1d6aa4fb
96 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The embedded URL points to a domain associated with phishing, and the document body, though heavily obfuscated, contains text related to 'Etisalat balance inquiry uae', suggesting a lure for a phishing or scam operation.

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://trafficel.ru/strik?utm_term=etisalat+balance+inquiry+uae PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4365586/normal_5f94efeed7846.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365599/normal_5fbcaee51daab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372085/normal_5fd306804f3c0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477913/normal_5fd21d97785c1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403128/normal_5fc4cdd7b5944.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc553cb239b0722914ea5f0/t/5fcbf888fe657040d57b8334/1607202953156/rexamoxixudowal.pdfIn PDF document text
    • https://s3.amazonaws.com/bewibiwat/hr_administrative_assistant_job_description.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/68d28ac7-436c-49f1-9649-60662a629174/indian_movies_in_sierra_vista.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2fb60c30a162e0c601609/t/5fc7e541440ab22dc97b6432/1606935874578/34859367692.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f4219a63-6013-4c6f-867d-38a550cfdac9/16004521492.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/156f8755-1ba8-436d-a019-d08dc59af1c7/2012_mustang_v6_mods.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbffcc36609fd0ee78c2f31/t/5fc1b21708845d0924c9e145/1606529559993/perumafidinitoruzeranuraf.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_off0000cbe8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBE8 5120 bytes
SHA-256: d1fe88b82e8832e9a9731bdb80cac983dbfec91debbd75a2fc30ecd14bb971c6
font_01_sfnt_off0000dd6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD6D 10988 bytes
SHA-256: b55ff260901465a9e495ef1feb0336d89f170a0c1ae78375f1485db11b1acdbc

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