Malicious PDF — malware analysis report

Static analysis result for SHA-256 304b8c086b164676…

MALICIOUS

PDF

75.7 KB Created: 2021-04-06 20:50:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e0e631f0bfecf5aeec53aca5c076b75c SHA-1: 2a43e7e37bd2d4d510b86d1a44ccc669470e7eb4 SHA-256: 304b8c086b164676abd011ecd8983abc6eabec6f5555baed88ba755e6558a794
96 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with one prominent URL pointing to a suspicious domain associated with phishing. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though obfuscated, appears to be a lure, likely directing users to download further malicious content or visit a phishing site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://ponafet.ru/strik?utm_term=what+time+to+start+road+to+hana
    • http://zumarezojupot.iblogger.org/98221222612.pdf
    • https://cdn.sqhk.co/fimegasaz/fG8A4jj/muwakoriruxidovulovi.pdf
    • https://cdn.sqhk.co/jifonakilux/jhiZjdY/83869264280.pdf
    • http://opencabinets.xyz/why_wont_my_troy_bilt_lawn_mower_startm9uds.pdf
    • http://fivokuje.iblogger.org/97156084946.pdf
    • http://arenaprobet.com/vegamigojesozumigu9ya3a.pdf
    • http://fikunigogijori.22web.org/apache_tomcat_6_for_mac_os.pdf
    • http://kraftmann.su/traffic_moto_3d_mod_apkfkzwp.pdf
    • http://tesar-krd.ru/zunapuniweuo1fg.pdf
    • http://copyrightproblem.com/goxonimfedu9.pdf
    • http://rukovofefiferiw.iblogger.org/5257660849.pdf
    • http://pifadopagel.scienceontheweb.net/megomogaluwivumisef.pdf
    • http://jepewadagamer.scienceontheweb.net/76036330839.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://c064424b-11a8-4e39-a524-24a74bcd733d.filesusr.com/ugd/54e393_dbdb5ec1b69d49d792dd352cc082ec22.pdf?index=true
    • http://lojarine.epizy.com/andrea_andrassy_prekid.pdf
    • http://rigidafavubo.myartsonline.com/how_to_get_a_religious_exemption_for_vaccines_in_ct.pdf
    • https://3c3b6f52-20a2-448a-be11-eec5930c502f.filesusr.com/ugd/0ca786_07a981d7bf9147cba3ba7a98521b8c9f.pdf?index=true
    • https://855e1e5b-0daf-4dce-aa73-dfad2bfec5df.filesusr.com/ugd/ced2dc_0cb0edffa87c41589b1bea3b54d19777.pdf?index=true
    • http://sakupoje.epizy.com/stock_car_racing_2018.pdf
    • https://436010f1-0dd7-4950-aec0-3bdf337573e8.filesusr.com/ugd/5a4c69_226d30345ca447a186aed91601d6d75c.pdf?index=true
    • http://badamowafe.onlinewebshop.net/gabewoxerobaxoreworig.pdf
    • http://bojefej.epizy.com/45359995762.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_off0000eac9.bin
5c3b78cb20ffe646ae9b2559efba5d70580a4eb25645dabe63fedafbd6275794
pdf-font-stream PDF embedded font (sfnt) at offset 0xEAC9 5048 bytes
font_01_sfnt_off0000fbcf.bin
55c90cbfe2698a19fd31462a99dd49c2a6903ac67b3fd17a7465debc67f5d80e
pdf-font-stream PDF embedded font (sfnt) at offset 0xFBCF 11100 bytes