Malicious PDF — malware analysis report

Static analysis result for SHA-256 e152e0b98671d635…

MALICIOUS

PDF

66.5 KB Created: 2020-11-16 19:40:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 4a1e765ac6f9fd14c95971aa3f28e05f SHA-1: a0256c3e59ed3b0802749bb0dbd1300204277c28 SHA-256: e152e0b98671d63571174b376b232ca77c68e492ee09ab0f9c3b2ab8cbc5368d
154 Risk Score

Malware Insights

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

The PDF file contains a lure related to Canadian citizenship certificates, directing the user to a suspicious URL. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. No scripts were extracted, but the embedded URL is the primary indicator of compromise.

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://traffine.ru/wb?keyword=canadian%20citizenship%20certificate%20number%20format In PDF document text
    • https://juragubiv.weebly.com/uploads/1/3/0/8/130874328/9cf4a4513dfa5.pdfIn PDF document text
    • https://dajetulanew.weebly.com/uploads/1/3/4/3/134309067/935077.pdfIn PDF document text
    • https://dejaxunex.weebly.com/uploads/1/3/4/3/134318563/59c519fef8.pdfIn PDF document text
    • https://tukibasitotaz.weebly.com/uploads/1/3/4/4/134445351/8476960.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/zakunafu/84670333154.pdfIn PDF document text
    • https://s3.amazonaws.com/salosibejodod/sistemas_de_bases_de_datos_distribuidas.pdfIn PDF document text
    • https://s3.amazonaws.com/zobuwubedak/3rd_grade_math_assessment_test.pdfIn PDF document text
    • https://s3.amazonaws.com/xisakazelelinim/portmeirion_dishes_made_in_england.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/00cd2861-cd44-49da-93fa-fcd8b010dfe5/6244064046.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5f479f92-9a64-44b3-88ce-1f0e5b39ce92/zajorik.pdfIn PDF document text
    • https://s3.amazonaws.com/nitidadufetenu/betujiwuzox.pdfIn PDF document text
    • https://s3.amazonaws.com/fumiposamisur/15090544946.pdfIn PDF document text
    • https://s3.amazonaws.com/tenunud/xatelonitozetetes.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_off0000c651.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC651 5460 bytes
SHA-256: 077e24ad88db42ab7c0c775d496d3a0af1e64102de669280bbdb3dc1b9d77f78
font_01_sfnt_off0000d8b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8B2 10720 bytes
SHA-256: 9def4252d02bf29e82d8c2b0d4bdae8425d67ac2ff75dd69611ef810e886ae09

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