Malicious PDF — malware analysis report

Static analysis result for SHA-256 95fedcb80cef99f7…

MALICIOUS

PDF

71.8 KB Created: 2021-04-05 06:29:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0365a1376016339c17b917a25d390f1a SHA-1: 729ae4c98bb2cf1c9d25136d8cb55ba64f7401fd SHA-256: 95fedcb80cef99f7f03037f4c5c9ad25bb22bd74d20cab9991a69610a400a4aa
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URI pointing to 'vilenefex.ru', which is a strong indicator of malicious intent. The document body, though heavily obfuscated, contains keywords like 'Neolithic revolution test pdf' and application metadata, suggesting a lure to disguise the malicious URL. No scripts were extracted, but the presence of external URLs and the overall detection profile strongly suggest a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://vilenefex.ru/award?keyword=neolithic+revolution+test+pdf
    • http://nasufulorejuwe.mywebcommunity.org/66463616372.pdf
    • http://ruwufuwetoj.mygamesonline.org/g_shock_5081_ga_100cf_price.pdf
    • http://fiwisud.getenjoyment.net/80805351412.pdf
    • https://nomomiwadij.weebly.com/uploads/1/3/3/9/133997716/b017c.pdf
    • https://womarunere.weebly.com/uploads/1/3/4/3/134315700/zuvusezudigoj-ridajomonima-vizariwowababuv.pdf
    • https://rabidibizuzej.weebly.com/uploads/1/3/4/6/134648686/186e1e9568342.pdf
    • http://mejuzuw.scienceontheweb.net/21583779187.pdf
    • http://lumobumekola.getenjoyment.net/xodebebokamuko.pdf
    • http://dilawiputonu.mypressonline.com/21871063112.pdf
    • http://birobupalojasux.iblogger.org/backwards_and_forwards_david_ball.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://punegejofuj.epizy.com/python_3._5-_32.pdf
    • https://f8d82b49-d438-4da2-b906-f876cb6fe635.filesusr.com/ugd/12dc78_f2c7a0eca94f4ae896e4d82759c5a71d.pdf?index=true
    • https://3bcdeb60-9876-4d14-bc0a-1dd1632c647c.filesusr.com/ugd/16a96a_7c9fc50fa8c848c8842842620484299d.pdf?index=true
    • http://lovupitofenux.rf.gd/rofupilelatavelol.pdf
    • http://puwojewemuxa.epizy.com/active_voice_and_passive_voice_through_tamil.pdf
    • https://6cdf8c5e-36a0-4b6d-987f-32d3d50030cd.filesusr.com/ugd/3c2e2e_7a9058b7832e4e32ad1e5589e57fb8ea.pdf?index=true
    • http://dalofib.rf.gd/vabubagirunixefor.pdf
    • https://9042e326-c85f-44e6-b9b6-0c206471fdba.filesusr.com/ugd/0d2fda_a0d76fcbd58949e4b40b6b05ec5a3401.pdf?index=true
    • https://71a0d42b-91d5-4e94-9338-ff69ca8a624b.filesusr.com/ugd/e5d5e5_f989114c28e54cb09f0ac2cf4c70ac04.pdf?index=true
    • http://limuzer.atwebpages.com/mipigapivup.pdf
    • https://5a6df620-610b-4d6f-8f1b-71e936bb70bc.filesusr.com/ugd/1f5cef_13e9e82fccac4c56a3b3b423de55c432.pdf?index=true
    • http://zogosugo.onlinewebshop.net/5e_phb_spells.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_off0000dd65.bin
ce85523e9d3a521e595eac2abbd99521a1175e6921bf960a7ce2227b3e69ccc1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDD65 5060 bytes
font_01_sfnt_off0000eea8.bin
c4d2f6c2673c5ea4ac7fac8204a3ff3a22d519e1e1cde1ad8074587a2ea39c32		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEEA8 10564 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.