Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b23ed0d4bf4b873…

MALICIOUS

PDF

68.1 KB Created: 2021-03-20 01:31:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1cd4a1dc62b8a5688550de04e128c935 SHA-1: f5ab87dd971cb585019747ca9f352b6d3ddf163c SHA-256: 7b23ed0d4bf4b87359cc1f4852d995945c9b4667c2155a1be400a9ec66b93e88
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, indicating malicious intent. It contains a large number of external links, suggesting a link farm or phishing operation. The embedded URLs point to suspicious domains, likely serving as lures for users to download further malicious content or be redirected to phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8129

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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
  • 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://botokaw.ru/award?keyword=b.+ed+entrance+syllabus+odisha+pdf
    • http://legendnat.space/bojivolomixixote4zco1.pdf
    • https://ralubimuxafoku.weebly.com/uploads/1/3/4/3/134373731/7887742.pdf
    • https://lijiwowotu.weebly.com/uploads/1/3/4/5/134587055/kadawapelo_vevajiruw.pdf
    • http://tadugebakonuged.getenjoyment.net/c_primer_6th_edition.pdf
    • https://cdn.sqhk.co/baresupujar/B4ib9gh/legends_of_runeterra_cards_art.pdf
    • http://kumululurug.scienceontheweb.net/pafor.pdf
    • https://sipavokipepino.weebly.com/uploads/1/3/4/3/134330850/080fe765f0aff.pdf
    • https://jivikusobule.weebly.com/uploads/1/3/5/3/135326696/846042.pdf
    • http://eushopvmn.site/kivedanyx1oa.pdf
    • http://ing-jobs-opportunities.com/9717989972q1flc.pdf
    • http://vojakebuniseti.22web.org/wokukibojebepopigabe.pdf
    • http://gakmancreatures.ru/technical_analysis_ideal_for_beginnersx1r4z.pdf
    • http://kalanuso.iblogger.org/jaleserajonize.pdf
    • http://fullcreditreport.info/15892455507nwfd6.pdf
    • https://lokejarezuwomi.weebly.com/uploads/1/3/0/7/130776656/refozasaniz_besemobuduwudu_bibadekanawepen.pdf
    • https://cdn.sqhk.co/dutaxato/fMMOgOq/whatsapp_messenger_software_for_laptop.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://gefifeji.rf.gd/nusemaxamujodo.pdf
    • https://6c8027e1-9878-41b3-a9ef-32ba2b6bcd02.filesusr.com/ugd/185811_760b0a6ec6a04791be76407f053edb40.pdf?index=true
    • http://kesitebogi.epizy.com/79425977223.pdf
    • http://dovitunazimaze.epizy.com/airdrop_for_windows_7.pdf
    • https://b1c30c75-ab46-439a-884d-3836ae4b8a49.filesusr.com/ugd/2d1648_82208920626c489caba0d8de1f74de1a.pdf?index=true
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f808.bin
5690c3b027e9b019d0d7272e3d16594fc12b2b4c814fd3bc9a4c4b6770b5358a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF808 5568 bytes

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