Malicious PDF — malware analysis report

Static analysis result for SHA-256 d87e9a631df5dc1d…

MALICIOUS

PDF

93.9 KB Created: 2021-03-10 16:54:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 164531d70d6ab6c19380f169f35e3db3 SHA-1: 2110a8bae40793d8d0eecad6e0c42bcdd3adb589 SHA-256: d87e9a631df5dc1d434b3f5213e5829cb716a928b84cc1b1372c5f6a2f9dbf7a
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://xezojetit.ru/123?utm_term=terraform+boolean+variables PDF link annotation
    • https://cdn.sqhk.co/kokademesuz/iihokHV/jagajanumudimiwogi.pdfIn PDF document text
    • http://xujaxul.mywebcommunity.org/19248748727.pdfIn PDF document text
    • http://beduzevitugok.mypressonline.com/walaluxevo.pdfIn PDF document text
    • https://cdn.sqhk.co/nexetifosam/gfidoZT/92239880910.pdfIn PDF document text
    • http://verenica.net/9962945488560sv9.pdfIn PDF document text
    • http://ligexekena.mywebcommunity.org/buferekidexatiw.pdfIn PDF document text
    • http://imedo.ru/lego_death_star_blueprintsmq75k.pdfIn PDF document text
    • http://bejawutipage.mywebcommunity.org/how_to_reset_honeywell_water_heater_valve.pdfIn PDF document text
    • http://braco.ru/arduino_kit_price_in_ghanaetx3r.pdfIn PDF document text
    • http://rolopigabetitu.scienceontheweb.net/elite_dangerous_default_keyboard_map.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/davubewu/57816295579.pdfIn PDF document text
    • https://s3.amazonaws.com/diwitapezu/linkedin_summary_template_for_recent_graduates.pdfIn PDF document text
    • http://gozenabuzixi.onlinewebshop.net/15305805763.pdfIn PDF document text
    • https://s3.amazonaws.com/bisazabe/48719157518.pdfIn PDF document text
    • https://s3.amazonaws.com/sizabo/tipos_de_grupos_sociales_para_nios.pdfIn PDF document text
    • https://s3.amazonaws.com/gifiz/how_to_write_a_5_paragraph_essay_fast.pdfIn PDF document text
    • https://s3.amazonaws.com/xuzed/rigim.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_off000133da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x133DA 5064 bytes
SHA-256: dc94bc68e2725d5ebb3e3443806423628b1776677f2f45d031f6a76e8b911bfd
font_01_sfnt_off00014500.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14500 11428 bytes
SHA-256: 5048e77a80e1f681ffc50375080958a16ff8fe9c82827cea7fcab46a05479284

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