Malicious PDF — malware analysis report

Static analysis result for SHA-256 5286c11a1a0279b6…

MALICIOUS

PDF

69.4 KB Created: 2021-01-17 05:41:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 884f1d618a8c18f25bab7bfc4e622851 SHA-1: c05e841e4d24267be6c84d267c4d9e92d02013ce SHA-256: 5286c11a1a0279b6a3aae00b813b50001549b6114155eb44e8de924ea7b0e0bf
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that, when clicked, likely leads to a phishing or malware distribution site. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to trick users into navigating to a malicious resource, likely as part of a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://traffine.ru/123?utm_term=ufo+interactive+aircraft+manual+espa%25C3%25B1ol PDF link annotation
    • https://site-1241800.mozfiles.com/files/1241800/87589115456.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393179/normal_5fe767c367a39.pdfIn PDF document text
    • https://cdn.sqhk.co/sikibeve/N6dA3gf/gikuwojura.pdfIn PDF document text
    • https://cdn.sqhk.co/xuxinugad/7hj7had/46751907796.pdfIn PDF document text
    • https://cdn.sqhk.co/lazujanaziri/2Hiikhg/33300502035.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485703/normal_5fe035ae5b181.pdfIn PDF document text
    • https://nasavizar.weebly.com/uploads/1/3/5/3/135322571/gitozejikebi-lasiw-kekubejazajoja-sewapizimipaxif.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454562/normal_5fdc6b6f3d0c2.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/wofaxil/64518901511.pdfIn PDF document text
    • https://s3.amazonaws.com/nigimul/31334388134.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_off0000cf16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF16 5424 bytes
SHA-256: 0ca39278c5332a27e5196c14969cf990d395fa50411f9d122eb30c6199eba850
font_01_sfnt_off0000e140.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE140 10956 bytes
SHA-256: 811f22df411c195dd0d77d96b882a5e87229406ad0a8dedf970f2894593ca9d7