Malicious PDF — malware analysis report

Static analysis result for SHA-256 8167f09ae34926ab…

MALICIOUS

PDF

76.8 KB Created: 2021-03-21 07:12:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5d01d11a4d89009de9df44d41b38c395 SHA-1: d07e67392bb31a7d02d0e82096fbce0bf05fdd87 SHA-256: 8167f09ae34926abd3dc93088598cf7d46a207e1caf3af9d9b8afe3129ee9151
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains embedded URIs that point to external resources, likely for phishing or malware distribution. The presence of these external links suggests an attempt to redirect the user to a malicious site, aligning with spearphishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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/wix?keyword=weeks+at+warren
    • https://static.s123-cdn-static.com/uploads/4417653/normal_5fe431241c82e.pdf
    • https://cdn-cms.f-static.net/uploads/4485451/normal_6040dd43339a1.pdf
    • http://posurazatux.mypressonline.com/acer_aspire_one_netbook_drivers.pdf
    • http://wow50.pro/xezuwoxobojuzuvedavibtlmd.pdf
    • https://static.s123-cdn-static.com/uploads/4385213/normal_5fca402b14038.pdf
    • https://cdn-cms.f-static.net/uploads/4489409/normal_60153ded43296.pdf
    • http://povar2020.site/686223098108k7rf.pdf
    • https://cdn-cms.f-static.net/uploads/4379220/normal_60391d9a2daa2.pdf
    • https://static.s123-cdn-static.com/uploads/4476420/normal_5fcd6cffd5e9b.pdf
    • http://jirenaxapibetig.scienceontheweb.net/world_war_z_2_game_download_pc.pdf
    • http://mp4.design/groupon_merchant_center_italiac15pb.pdf
    • https://gajevorotaro.weebly.com/uploads/1/3/5/3/135329880/2138807.pdf
    • https://jelonuzekuxenu.weebly.com/uploads/1/3/2/8/132814084/biruwod-govemisufa-seren.pdf
    • http://igcopyrightforhelps.com/how_to_get_spectrum_remote_to_control_tv_volumeru1dk.pdf
    • https://cdn-cms.f-static.net/uploads/4421209/normal_5fdc43638432f.pdf
    • https://gifaxopolipo.weebly.com/uploads/1/3/0/7/130739444/4771789.pdf
    • https://xavedogaw.weebly.com/uploads/1/3/4/6/134659805/8201651.pdf
    • http://kemamibuke.mygamesonline.org/xuroku.pdf
    • https://static.s123-cdn-static.com/uploads/4459628/normal_5fcaa2008832e.pdf
    • https://zodixezujiz.weebly.com/uploads/1/3/5/3/135345824/7732465.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://siwemoxoxawevuv.atwebpages.com/estrategias_de_comunicacion.pdf
    • http://lodumojokexiku.onlinewebshop.net/how_to_create_a_wordle_in_google.pdf
    • https://7fad2989-91b8-457c-89bc-9a0e7aeef19f.filesusr.com/ugd/b03ff3_ee33f627667b4aebbc80463f4d31ee4e.pdf?index=true
    • https://492f55f4-3442-4b37-b17e-39d9f2f0ae8a.filesusr.com/ugd/7dfe85_c5a743a93d4b405ca49fa114812c4222.pdf?index=true
    • 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_off0000ee92.bin
e9fb9a664cbf9cc80c5c1212447de691a7dcaf8f49e5744b0634d3ced6c37904		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEE92 4816 bytes
font_01_sfnt_off0000ff1f.bin
6525d738c5ae0c83f092d627cb52d103ee0a28ca44ff9f942bef92df46f680b7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFF1F 11272 bytes

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