Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e5410894c9bab4f…

MALICIOUS

PDF

73.0 KB Created: 2021-02-22 14:47:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 6da19132cfc035a8c0b7c17c68ed9ed5 SHA-1: e8b36b07276a6d9103d314faeb076dd7d8b0111b SHA-256: 9e5410894c9bab4fd02f52a9a201e50d09080d2ecb884a4d18522c93165e7e4c
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. It contains a large number of external links, suggesting a link farm or phishing attempt. The ML classifier also strongly indicated maliciousness. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a malicious document designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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
  • 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://leonvi.ru/aws?utm_term=officejet+pro+8610+change+cartridge PDF link annotation
    • https://fularoxu.weebly.com/uploads/1/3/1/4/131452806/915392.pdfIn PDF document text
    • https://pigulanofalo.weebly.com/uploads/1/3/1/4/131406379/1832918.pdfIn PDF document text
    • https://gibexiwufanoti.weebly.com/uploads/1/3/6/0/136099712/fosekuma.pdfIn PDF document text
    • http://vuruvuzivad.22web.org/vuzelatojonanone.pdfIn PDF document text
    • https://latimemoniborij.weebly.com/uploads/1/3/1/4/131437487/zesifev-lukuzavesom-revaruvaxov-lefiji.pdfIn PDF document text
    • https://sukaxivex.weebly.com/uploads/1/3/4/8/134895869/fekozip.pdfIn PDF document text
    • http://baltika-trans.ru/tasizokipixeginufebona4oosu.pdfIn PDF document text
    • http://salleapp.xyz/adobe_premiere_elements_free_full_version1sxw8.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/fifuto/monday_to_friday_calendar_template.pdfIn PDF document text
    • https://s3.amazonaws.com/vebogotexaf/calculator_free_for_windows_8._1.pdfIn PDF document text
    • https://s3.amazonaws.com/xovekolamoxe/jukujudinite.pdfIn PDF document text
    • https://s3.amazonaws.com/zukogi/history_of_japanese_architecture.pdfIn PDF document text
    • https://s3.amazonaws.com/paxivogedewilu/amity_university_lucknow_form_login.pdfIn PDF document text
    • http://kiluwemu.rf.gd/wirifoludedawedodixed.pdfIn PDF document text
    • http://pojasiw.rf.gd/play_store_google_service.pdfIn PDF document text
    • http://virirunabeso.rf.gd/pujatefafagonu.pdfIn PDF document text
    • http://lozisuvuxinosog.epizy.com/asos_tracking_information.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_off0000dce2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCE2 5852 bytes
SHA-256: dd69595105bd01e4e50acd8298af0ad07890a565f2ad3ff77593be4ddab20e98
font_01_sfnt_off0000f0d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0D5 11248 bytes
SHA-256: 76a1897a537e51b59b6acda002b0063057fc694dafa4a7199b865419a5ee79ab

Open this report in the interactive analyzer, or submit your own file for analysis.