Malicious PDF — malware analysis report

Static analysis result for SHA-256 f763e76989b23d90…

MALICIOUS

PDF

77.9 KB Created: 2021-01-19 09:49:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: dbf0ba1c140cbff2db37e106ddb45f00 SHA-1: 2a4229bf19f5a64a43f6cdfa8013fb63170df578 SHA-256: f763e76989b23d904fe0f70c87f9115dba261dcfad38978a3bc12971a3908a32
96 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a phishing or trojan payload. It contains an embedded URL pointing to a suspicious domain, likely intended to redirect the user to a malicious site. No scripts were extracted, but the presence of external URIs and the overall detection suggest a phishing attempt.

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://leonvi.ru/123?utm_term=elasticsearch+the+definitive+guide+o%2527reilly PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4488604/normal_60051a4590137.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424953/normal_6003b93352d68.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392462/normal_5fff98cd3eb4e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366995/normal_5fe11dac28446.pdfIn PDF document text
    • https://site-1174183.mozfiles.com/files/1174183/6327006806.pdfIn PDF document text
    • https://site-1166051.mozfiles.com/files/1166051/solution_of_oblique_triangles.pdfIn PDF document text
    • https://site-1179315.mozfiles.com/files/1179315/gazalobavi.pdfIn PDF document text
    • https://site-1185570.mozfiles.com/files/1185570/diva_hair_studio_hair_beauty_salon_enfield.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/tuletivotarupu/bvms_9._0_configuration_manual.pdfIn PDF document text
    • http://xewenofos.epizy.com/linifagidegovufuvelasogi.pdfIn PDF document text
    • https://s3.amazonaws.com/geradi/reporting_findings_in_quantitative_research.pdfIn PDF document text
    • https://s3.amazonaws.com/vajefam/xosuxupugafokabo.pdfIn PDF document text
    • https://s3.amazonaws.com/rodakarugupoko/fuginibu.pdfIn PDF document text
    • https://s3.amazonaws.com/lolijexejomak/best_wireless_earbuds_for_running_android.pdfIn PDF document text
    • https://s3.amazonaws.com/fajonubinomeder/effective_interest_rate_calculator_excel_template.pdfIn PDF document text
    • https://s3.amazonaws.com/suzujewa/going_concern_qualified_audit_report.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000de29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE29 5436 bytes
SHA-256: 91ee85f3807948b5733d6c25fd2bcd2b73c4b306e0c30af80baa1124bd3ed77f
font_01_sfnt_off0000f0c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0C0 10836 bytes
SHA-256: 087075bc9d16b6f88b590f8e774545dae76ea6d6b6dd55c46710a6f9bb3686ef
font_02_sfnt_off0001157f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1157F 16060 bytes
SHA-256: 5b0d2701ab39d2f69c66d7d16c60d8db0b323aa0832947137e757b5401d27330

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