Malicious PDF — malware analysis report

Static analysis result for SHA-256 1abd4084e2c35217…

MALICIOUS

PDF

66.3 KB Created: 2020-12-11 13:41:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 64ff677f755d4e3dde0f9319ed0bd936 SHA-1: b9ea06261157cf859d3d080c4ab8b8c700a30f22 SHA-256: 1abd4084e2c35217610574478198c3c4cef46c879a285a4be918ac2051722761
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The embedded URL 'https://gettraff.ru/aws?utm_term=logo+dls+2019+indonesia' is identified as a malicious redirector. The ML classifier also strongly flagged this PDF as malicious, and ClamAV detected it as 'Pdf.Phishing.Trojan'. The document body is heavily obfuscated, but the presence of malicious links suggests a phishing or malware distribution 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
  • 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://gettraff.ru/aws?utm_term=logo+dls+2019+indonesia In PDF document text
    • https://kutesavakelex.weebly.com/uploads/1/3/4/3/134336058/9683540.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415930/normal_5faacf50f227e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369775/normal_5fcd368de1dae.pdfIn PDF document text
    • https://rizigavitud.weebly.com/uploads/1/3/4/5/134581125/d45b5e89876b905.pdfIn PDF document text
    • https://jivenikovo.weebly.com/uploads/1/3/4/3/134308789/1240154.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/wuwabobujasivor/fojuso.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/83c4d504-d5c2-44fd-9605-0a39d0b3077b/72067594018.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7648c210-78dc-4db6-8f1a-39e5711d264d/57585740117.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8953dffc-e3a8-4eb7-a3c5-5ce49658da8d/8715258547.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f39745bd-115e-4fca-811a-8b1bcde91cca/maquete_de_saneamento_bsico.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5783d709-22eb-4d51-97e0-964172e884dd/kawanimovemazumowibepekur.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_off0000c755.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC755 5320 bytes
SHA-256: da9d6ba37deeb6bc3405194647d90aebeacedf1594d03117145a1d5bbb69a524
font_01_sfnt_off0000d983.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD983 10448 bytes
SHA-256: fdd77eef46f0b415e46a63f1d87e975637d367ddebef3da00f1d02ddaa7b8987

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