Malicious PDF — malware analysis report

Static analysis result for SHA-256 9339254d5412f309…

MALICIOUS

PDF

69.8 KB Created: 2021-02-16 03:45:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: a870186fc0dcd5d554b4e0af48204194 SHA-1: 49e2298975ede788d74f6aeaad7087e00fbc2432 SHA-256: 9339254d5412f309f7773b01890cecc8e5c26592c7e7acaab1f5e651e8a7a8b6
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, with a high risk score. It contains embedded URIs pointing to suspicious domains, suggesting a phishing or malware distribution attempt. The presence of external URIs and the overall detection pattern align with spearphishing attachments designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://seumenha.ru/123?utm_term=jam+speaker+review PDF link annotation
    • https://fedebeforejasu.weebly.com/uploads/1/3/4/4/134498020/1692874.pdfIn PDF document text
    • https://risogaruwakev.weebly.com/uploads/1/3/4/6/134634919/ac485df9ff1bd4.pdfIn PDF document text
    • http://zuzimosutikume.22web.org/14661143322.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369163/normal_600b16d0678f5.pdfIn PDF document text
    • https://kafasomawupi.weebly.com/uploads/1/3/0/7/130775431/dofokurif.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427509/normal_5febd42d33a57.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484156/normal_5fdf94c2f1c4d.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/godoremitiwuja/ashrae_psychrometric_analysis_cd.pdfIn PDF document text
    • https://s3.amazonaws.com/makixibawumebol/student_registration_form_bootstrap_template.pdfIn PDF document text
    • https://s3.amazonaws.com/safenalavojuwu/page_header_css_template.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_off0000d5c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5C8 5140 bytes
SHA-256: e370540fb0eeedc697ae90d689b4ccfa43b816863c98bf2e551425838e60ffd2
font_01_sfnt_off0000e745.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE745 10540 bytes
SHA-256: ac140ef32c9615eaee2a43e9b4c9d27f3f8d66fe9de8b6464f08d1dbc2825ab5

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