Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b15c17cec1a2fb8…

MALICIOUS

PDF

72.8 KB Created: 2021-01-31 12:56:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 66d3eb99ddfcb082956224a52043d0d5 SHA-1: 3ddc88159114b67815f97e99529663110c28b5ad SHA-256: 4b15c17cec1a2fb8825b92e2b79275edee7d05fb958b1072428cf4e8f1951c03
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, 'baarspo.ru', which is likely part of a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, likely for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://baarspo.ru/wb?keyword=hot%20rod%20garage PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4420597/normal_5ffdb5df3439d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489846/normal_5ff5abef193cf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369519/normal_5ffc63f2e3937.pdfIn PDF document text
    • https://cdn.sqhk.co/rutisifelom/gc5NUpi/jokutegikonikaxila.pdfIn PDF document text
    • https://cdn.sqhk.co/zoboxoba/gFjcK3V/origami_heart_step_by_step_instructions.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416490/normal_5fc69fa0b0e91.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446045/normal_5fee310cd67b7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487409/normal_5fcca3efa00df.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495686/normal_5fcb056e4118d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462974/normal_5ff40f797ccdd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372681/normal_600efd822bb7d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490724/normal_5fe88275ec7d2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403263/normal_5fcbec1d16949.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nexopuvesoreben.epizy.com/brigandine_the_legend_of_forsena_psx.pdfIn PDF document text
    • http://ximawefab.epizy.com/30111183291.pdfIn PDF document text
    • https://s3.amazonaws.com/tikoweravisixu/kelutosutinutelojimo.pdfIn PDF document text
    • http://pexoroxijaseduj.rf.gd/osaka_train_map.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_off0000db24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB24 4744 bytes
SHA-256: 5f0f4f28b62de6746bd4b232056ef960ed3f68e1296f9054a496fd1255124a0e
font_01_sfnt_off0000eb51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB51 12572 bytes
SHA-256: 9a48d6733698a4ece9eb9e95df1bfebc47d17e0c67cf122d259fa33e58e42f62

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