Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c2b36ef1e3c6aa6…

MALICIOUS

PDF

69.5 KB Created: 2021-03-11 02:33:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 9caaee5073a97ba2714e13e66d150319 SHA-1: 2f84e6f089ef32bf86f080dd1809d04f5a53993e SHA-256: 3c2b36ef1e3c6aa66d615027159908ca3490e20aa1469a0a6a93052b8c463666
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution 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 0.8230

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
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://fokemale.ru/award?keyword=aritmetik+dizi+soru+pdf PDF link annotation
    • http://kenuzerelo.22web.org/good_words_that_start_with_the_r.pdfIn PDF document text
    • http://saburogamo.iblogger.org/62219674038.pdfIn PDF document text
    • https://jivexirod.weebly.com/uploads/1/3/4/7/134707467/5a3615b.pdfIn PDF document text
    • https://ziropiwos.weebly.com/uploads/1/3/4/3/134311351/5790508.pdfIn PDF document text
    • https://judenebubiz.weebly.com/uploads/1/3/4/6/134656374/a854ab2b44b6ff4.pdfIn PDF document text
    • https://bunafigokakataw.weebly.com/uploads/1/3/0/9/130969192/pojotegevalegu.pdfIn PDF document text
    • http://mawazokaf.iblogger.org/trouble_warp_rules.pdfIn PDF document text
    • http://vaxozudobe.22web.org/33911914201.pdfIn PDF document text
    • http://penafur.scienceontheweb.net/kitirufeterovale.pdfIn PDF document text
    • http://nedipupuru.22web.org/75360730663.pdfIn PDF document text
    • http://vabazaf.22web.org/muxegevar.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jelamadigeg.epizy.com/bill_book_sample.pdfIn PDF document text
    • http://fofeparulofiz.rf.gd/wejusatanokivusafi.pdfIn PDF document text
    • http://funizenobuwuka.epizy.com/cbt_and_feeling_good_worksheets.pdfIn PDF document text
    • http://lutepotazor.onlinewebshop.net/turner_super_sidekick_for_sale.pdfIn PDF document text
    • http://tomedokuboder.epizy.com/what_is_the_meaning_of_communication_skills_training.pdfIn PDF document text
    • http://vanomuwoz.epizy.com/guzojafelerex.pdfIn PDF document text
    • http://sidajewaset.epizy.com/checkpoint_6500_appliance_datasheet.pdfIn PDF document text
    • http://nunitew.rf.gd/43289973560.pdfIn PDF document text
    • http://rilijoxedu.rf.gd/wazuwutaboman.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e08e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE08E 5048 bytes
SHA-256: fb5cc4d4e60d50328cfbde7b8006dbaa5e29c777a4eed2b5453ab43124b7c8f1
font_01_sfnt_off0000f1b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1B1 11888 bytes
SHA-256: aeb4e5d55dd840be91ca9757d7448cc440809320c0043e824bf4f8eb33f731b6