Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7584598d642ae6b…

MALICIOUS

PDF

63.3 KB Created: 2020-12-23 01:24:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 013c5d5749b2f311e1522ccad7fc0aab SHA-1: d610f52c17ff6a8c655998862a5fc1c9794be590 SHA-256: c7584598d642ae6b72cf057487ebd621fd0f5c800647ba95159c447b73e131d9
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector infrastructure, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly support its malicious nature. Although the document body is heavily obfuscated, the presence of a malicious URL suggests the primary goal is to redirect the user to a harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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=evertale+boss+guide In PDF document text
    • https://defagetomorig.weebly.com/uploads/1/3/4/5/134576552/82b43.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393208/normal_5fcfa38ac506d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461761/normal_5fa5bc7daec2b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483361/normal_5fdb9a6f521b9.pdfIn PDF document text
    • https://sukodijam.weebly.com/uploads/1/3/4/5/134516983/6381009.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/vavabi/breaking_into_wall_street_interview_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae578351-776f-4b35-af53-ec34afef7020/descargar_calibri_gratis.pdfIn PDF document text
    • https://s3.amazonaws.com/dudigonifu/49373559084.pdfIn PDF document text
    • https://s3.amazonaws.com/sefukirexuwekij/gorman_california_weather_report.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d3e6ca7-4236-4ed3-9feb-6f01c91dce08/ximamume.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ac3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAC3A 4128 bytes
SHA-256: 3b570d08d4859f44dd501cc71f29424da4025aa560d9c367ad7e73364cdbf821
font_01_sfnt_off0000bad2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBAD2 5152 bytes
SHA-256: abe57e176d360415649f4c73777c8d307c8010105b4c0879d87cf10c86728bb3
font_02_sfnt_off0000cc68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC68 10544 bytes
SHA-256: f9760a4cb498a086460db751381ad7087bb4e48e89b7ab11d259d6d712abb81f

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