Malicious PDF — malware analysis report

Static analysis result for SHA-256 d66f3fb11e05f9fc…

MALICIOUS

PDF

113.3 KB Created: 2021-04-25 05:31:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 407ca9292d4ee64132b189657cfde0d8 SHA-1: 476e1fec71e91b7033120e32abe81884ee63eb14 SHA-256: d66f3fb11e05f9fc6cb669761d131a115a1c5a2cfe26b59e9f079b57df915b4a
104 Risk Score

Malware Insights

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

The ML classifier and ClamAV detection strongly indicate malicious intent. The presence of an external URI pointing to 'xezojetit.ru' and the 'SE_URGENCY_LURE' heuristic suggest a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a malicious document designed to trick users into visiting a compromised site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://xezojetit.ru/strik?utm_term=maximum+ride+age+rating
    • https://taburexil.weebly.com/uploads/1/3/4/3/134374137/tawexe.pdf
    • https://lonofajizol.weebly.com/uploads/1/3/5/3/135389348/pemogofigafogiripak.pdf
    • https://cdn.sqhk.co/bulelovuroga/dQgfEda/pikepox.pdf
    • http://circulshtangcalip.website/322526763256kpl8.pdf
    • http://pupezawat.scienceontheweb.net/55379063367.pdf
    • https://dosedupuwosiwoz.weebly.com/uploads/1/3/0/7/130776272/6b9b4f0b01.pdf
    • http://bujenaro.scienceontheweb.net/ronabupemid.pdf
    • http://fukanaduvubife.22web.org/lovudukuxod.pdf
    • https://cdn.sqhk.co/worekoxe/AlXij7G/23596655936.pdf
    • https://puduwuxibipufu.weebly.com/uploads/1/3/5/9/135966859/jopufuzadugew-lutaninab.pdf
    • http://juvizex.sportsontheweb.net/dubizeg.pdf
    • https://cdn.sqhk.co/gukokefa/hgeighg/91211128541.pdf
    • https://dokodajibebabek.weebly.com/uploads/1/3/2/3/132302773/54de4b376.pdf
    • http://interbank.link/silent_knight_5700_battery_calculationsyb5b9.pdf
    • http://tk-pobeda.site/sipenifewowubix1kz5h.pdf
    • http://paxijivatebul.getenjoyment.net/four_letter_words_in_english_for_kindergarten.pdf
    • http://my-favshoph.online/adding_fractions_gamexrlnp.pdf
    • http://wazasoku.iblogger.org/sesajiwipujudo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://liroporuki.myartsonline.com/online_banking_services.pdf
    • http://mobomema.epizy.com/kuvufogijokonuxajexex.pdf
    • https://141ebdc9-a3c9-4c6d-b8f9-366dbf139dec.filesusr.com/ugd/46bfb0_97456d4baa6b4bc78706cc64779f4fec.pdf?index=true
    • https://4bf641bf-117a-4913-931f-55e49063997f.filesusr.com/ugd/5befcb_0ac3843b23904dcf861573900f3e5a95.pdf?index=true
    • http://naluvexuwemajub.rf.gd/adding_and_subtracting_decimals_worksheets_common_core.pdf
    • http://xitozafa.epizy.com/31407043784.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_off00017e0c.bin
5e731e548a06a96f40882009a6f82a4bd1c69f77d63e442c81f5a68da147aca3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17E0C 5008 bytes
font_01_sfnt_off00018f12.bin
dd051af2ce46b971fd2ed57bcc2b21efcd69eca728762bac022c02bbeef79954		 pdf-font-stream PDF embedded font (sfnt) at offset 0x18F12 11312 bytes

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