Malicious PDF — malware analysis report

Static analysis result for SHA-256 8fb6840a4fc3085e…

MALICIOUS

PDF

75.9 KB Created: 2021-02-15 11:00:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 59efdfc4c4689d79a8cdba0d1ce7990b SHA-1: 247475bf2cca6502f56a2b0a04f955706b91829f SHA-256: 8fb6840a4fc3085eda42288188121722d6b4611e7780a7228b6367b7b1f8bf4b
96 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 external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://crophysi.ru/strik?utm_term=write+slope+intercept+form+graph PDF link annotation
    • http://help-lnstagramcopyrights-verify.com/93541974389lavnv.pdfIn PDF document text
    • http://bazis-rostov.com/moxoluwijin1ozw.pdfIn PDF document text
    • http://daating19.site/kigiretitawifeleuvjoc.pdfIn PDF document text
    • http://robertferrell.net/5506568868rsaac.pdfIn PDF document text
    • http://josebixotarez.22web.org/77405893422.pdfIn PDF document text
    • http://sunepoxuvigos.66ghz.com/growatt_inverter_20kw_datasheet.pdfIn PDF document text
    • http://cardioactiveuficiale.site/25522608838vkhyv.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/napoledunadigo/barcode_reader_excel_spreadsheet.pdfIn PDF document text
    • https://s3.amazonaws.com/dabatisew/51538346098.pdfIn PDF document text
    • http://sikamavidasatam.epizy.com/intercontinental_hotel_group_annual_report.pdfIn PDF document text
    • https://s3.amazonaws.com/dusined/zobufewoxasiri.pdfIn PDF document text
    • https://s3.amazonaws.com/kefiperizonofu/jujade.pdfIn PDF document text
    • https://s3.amazonaws.com/tutapaxi/91709358636.pdfIn PDF document text
    • https://s3.amazonaws.com/dazutun/jezuketofomot.pdfIn PDF document text
    • https://s3.amazonaws.com/xufoxorog/75118905974.pdfIn PDF document text
    • http://mezajunezu.rf.gd/32508900367.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In 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_off0000e8d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8D6 5444 bytes
SHA-256: d6f251d27c668b7b1f78330c50b2d76add3986a17db27d2abee66897aca7be1c
font_01_sfnt_off0000fb3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB3F 10960 bytes
SHA-256: 4d25ad6952f4db01666d715057ba32270d8cc9a9b8bec1b297e0f35497a43f48