Malicious PDF — malware analysis report

Static analysis result for SHA-256 eee0b818b5c2e1af…

MALICIOUS

PDF

76.5 KB Created: 2021-03-18 11:13:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 877f3a53486bfc3a48ff37afa7b65571 SHA-1: 0219e6032b5f840f5e13fcb7784b6d35569eb4e7 SHA-256: eee0b818b5c2e1af7350536485e8dff6cdd403c68dc0beb42c8d557547861288
96 Risk Score

Malware Insights

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

The PDF document contains an embedded URL that directs users to a phishing site disguised as a Google Forms sign-up sheet. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for credential harvesting or further malware delivery. No scripts were extracted, but the presence of an external URI is a primary indicator of the attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/123?utm_term=sign+up+sheet+on+google+forms
    • http://poxumanavofeboz.scienceontheweb.net/oasis_water_cooler_leaking_from_top.pdf
    • https://totixibepetuter.weebly.com/uploads/1/3/4/3/134345693/mezefobub-powevatipom.pdf
    • http://nipokaxa.getenjoyment.net/85063020250.pdf
    • http://gojavodevagajuw.mygamesonline.org/13078367572.pdf
    • http://kaboliwup.mypressonline.com/gunujose.pdf
    • https://xuxefakeni.weebly.com/uploads/1/3/4/2/134234722/3097301.pdf
    • https://sijudunewofas.weebly.com/uploads/1/3/4/6/134696620/jiwalodaduzoxapizin.pdf
    • http://wotedogupowu.sportsontheweb.net/lesadi.pdf
    • https://cdn-cms.f-static.net/uploads/4417329/normal_6010aab2ba6e1.pdf
    • http://in-arenas.com/58025086159uftwd.pdf
    • http://vertigoa.online/749636811941f75q.pdf
    • https://cdn-cms.f-static.net/uploads/4474450/normal_6037c3dce661a.pdf
    • http://cosmicgig.com/carlow_county_council_housing_application_formrolhz.pdf
    • https://soxexovefulobi.weebly.com/uploads/1/3/1/4/131484328/ca824002a1d.pdf
    • https://cdn-cms.f-static.net/uploads/4454988/normal_5fd612f955de4.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://57fc24c6-ba7c-430a-bdae-05304608b610.filesusr.com/ugd/bc9c68_d456576468a04b46b5ded8315ea2f4b3.pdf?index=true
    • https://s3.amazonaws.com/fosalizuzu/sokumokikubefuruza.pdf
    • https://s3.amazonaws.com/jivuxo/titizif.pdf
    • https://s3.amazonaws.com/rufonali/covid_test_centre_jobs_manchester.pdf
    • https://s3.amazonaws.com/wizuluworafid/what_to_expect_the_first_month_of_working_out.pdf
    • https://42e65457-ec34-4553-8979-78b6e302f774.filesusr.com/ugd/f1976d_ddcd01625c1f42e288c34f9a217c9263.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_off0000ed31.bin
230ada6f1797138268139cdb8b4c7af39384c30af2976057e5aa1c4a09b57ee3
pdf-font-stream PDF embedded font (sfnt) at offset 0xED31 5208 bytes
font_01_sfnt_off0000feca.bin
0878cf4bb8f17d47a5abda35a558264db195862ceb4c54c57c53b4758ba932cf
pdf-font-stream PDF embedded font (sfnt) at offset 0xFECA 10732 bytes