Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca8ef6f6d0ada16a…

MALICIOUS

PDF

64.0 KB Created: 2021-03-08 15:46:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: bf22b1f0158a32f40a799b5e44fbd364 SHA-1: 585c5087709c78a3f2f52048f579797db83599b7 SHA-256: ca8ef6f6d0ada16a598faca1a6eb6503620d8d1f5dc602f5f777506038fbf74a
154 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7291

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
  • 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.
  • 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://xezojetit.ru/strik?utm_term=chemical+bonding+worksheet+%25232+%2528types+of+bonds%2529+answer+key PDF link annotation
    • http://reform-st.ru/how_much_is_a_2018_yamaha_r6zqkj6.pdfIn PDF document text
    • http://petersikdar.com/where_to_buy_nutone_central_vacuum_parts4lwr9.pdfIn PDF document text
    • http://artistichomesolutions.com/princeton_review_sat_math_2aobbv.pdfIn PDF document text
    • https://gagodizuw.weebly.com/uploads/1/3/5/9/135965264/271525.pdfIn PDF document text
    • https://sojopukav.weebly.com/uploads/1/3/4/2/134266177/kijowafemetaninok.pdfIn PDF document text
    • http://cz-nitrof.website/putting_sheetrock_on_basement_wallsbhrwe.pdfIn PDF document text
    • http://edevletorg.com/9158685317q9h6d.pdfIn PDF document text
    • https://jokasagumejede.weebly.com/uploads/1/3/1/0/131070006/2057838.pdfIn PDF document text
    • http://form-lnstagramcopyrightservice.com/wifevovewuvojidavugianrni.pdfIn PDF document text
    • http://fixetufuzafix.22web.org/zaxugabajajalevos.pdfIn PDF document text
    • http://sexesex.site/define_non_programmed_decision16j02.pdfIn PDF document text
    • http://hookup681.site/smart_dealership_near_meevwbt.pdfIn PDF document text
    • https://jadotonevuwupu.weebly.com/uploads/1/3/1/4/131407011/tipozazagu-zisuwolemok-movukuzilewi.pdfIn PDF document text
    • http://brumbum6.xyz/dangling_modifiers_worksheetsf6rb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gukedam.rf.gd/9471211668.pdfIn PDF document text
    • https://s3.amazonaws.com/labitajaxatufib/witezebozadewet.pdfIn PDF document text
    • https://s3.amazonaws.com/pirofopafu/facebook_sdk_unity_android.pdfIn PDF document text
    • http://koponobazad.rf.gd/money_loan_contract.pdfIn PDF document text
    • https://s3.amazonaws.com/muxegeza/migratory_beekeeping_ielts_mentor_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/bawalidamovidud/24256510288.pdfIn PDF document text
    • https://s3.amazonaws.com/jesidofefe/white_rodgers_thermostat_reset_1f85-277.pdfIn PDF document text
    • http://widuxetikos.epizy.com/21827774048.pdfIn PDF document text
    • https://s3.amazonaws.com/dedinavesute/jebikeruferavomeruv.pdfIn PDF document text
    • https://s3.amazonaws.com/robumuduluwise/amity_park_cheat_code_android.pdfIn PDF document text
    • https://s3.amazonaws.com/mejifavo/vinonatukasig.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ed17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED17 5552 bytes
SHA-256: 734c8953b7cece6de0302e17e554d7f8884d4d6fd2fc3e665e3b74131d4bc233

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