Malicious PDF — malware analysis report

Static analysis result for SHA-256 73267e5fbbc9b1c3…

MALICIOUS

PDF

75.0 KB Created: 2021-03-05 10:33:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 990b58b8fac49bc5fdcdf0779ae2cc61 SHA-1: 158e60d37cc5980a3f1f469e635eabb9a43bd5b2 SHA-256: 73267e5fbbc9b1c3aabd7191e0eed095378d541d51b161b538af8ca635faf101
96 Risk Score

Malware Insights

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

The PDF document contains an external URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware site. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the presence of embedded URLs and the nature of the heuristics suggest this PDF is designed to exploit users by presenting deceptive content and leading them to malicious destinations.

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://dafemum.ru/strik?utm_term=lexus+rx+350+price+in+nigeria+2012
    • http://xufelaketodo.getenjoyment.net/73147920204.pdf
    • http://ridunculus.com/mechanical_fe_exam_study_materialspsb1b.pdf
    • https://static.s123-cdn-static.com/uploads/4473062/normal_5fcf2468538e1.pdf
    • http://xulubapatoso.scienceontheweb.net/66910250254.pdf
    • https://static.s123-cdn-static.com/uploads/4450625/normal_5fe2697126e50.pdf
    • http://nekuwagibajese.getenjoyment.net/why_will_my_ps3_controller_not_charging.pdf
    • https://cdn-cms.f-static.net/uploads/4446944/normal_5fda78b04e50d.pdf
    • http://tevutubiwij.getenjoyment.net/honeywell_econoswitch_rpls730b_manual.pdf
    • http://ketaton.mywebcommunity.org/dobetovogi.pdf
    • http://spoonnumberone.xyz/famous_jane_jacobs_quotes660d3.pdf
    • https://cdn-cms.f-static.net/uploads/4381547/normal_5fea1f1b6ad31.pdf
    • https://static.s123-cdn-static.com/uploads/4428331/normal_5ff06a0b94cf8.pdf
    • http://penageli.getenjoyment.net/will_raphtalia_marry_naofumi.pdf
    • https://jezexubuxerib.weebly.com/uploads/1/3/4/0/134040893/lukedegababajeb.pdf
    • http://vuzuwul.getenjoyment.net/toyota_camry_2012_regular_maintenance_schedule.pdf
    • https://batebabegusuk.weebly.com/uploads/1/3/1/4/131437625/5726829.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://pimoxonevuwewax.atwebpages.com/46825836905.pdf
    • https://uploads.strikinglycdn.com/files/93de4b15-5447-4360-9d56-d8a8bae91954/94272458825.pdf
    • https://uploads.strikinglycdn.com/files/4aff3160-82ed-4042-abc7-3f203f95468d/4272465241.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e53f.bin
c7c25ece548315d416ea0635792426fe5b7d772f2a2b71b85e61897fca4e393b
pdf-font-stream PDF embedded font (sfnt) at offset 0xE53F 5692 bytes
font_01_sfnt_off0000f8bc.bin
4dd1bca40563b1541bc2e7f714b5c9c4d94971f80b45ee6197b6fe234792581d
pdf-font-stream PDF embedded font (sfnt) at offset 0xF8BC 10640 bytes