Malicious PDF — malware analysis report

Static analysis result for SHA-256 bcb97a33329cf6a7…

MALICIOUS

PDF

69.6 KB Created: 2020-12-15 09:23:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 3065769875de44ee7fff0c12cfd8a284 SHA-1: b81965f32d2d4b452239301bef6234d409955e88 SHA-256: bcb97a33329cf6a770acfb545aca30abfa28f9f06ac64905da20679a2c700f79
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The embedded URL points to a suspicious domain, suggesting a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URI heuristic indicate the file's purpose is to redirect the user to a malicious external resource.

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://trafftec.ru/123?utm_term=folding+security+gates PDF link annotation
    • https://tawedituja.weebly.com/uploads/1/3/4/8/134864040/wirevagap.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc0d8d024b06a7eb3fedc56/t/5fc3fac53c02f22b9d8866ce/1606679238261/65701490027.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc70aeab2e29c7ba991be9b/t/5fcdf9945d2e6f3bda61752e/1607334295664/cooking_fever_game_walkthrough.pdfIn PDF document text
    • https://s3.amazonaws.com/bifamomove/doe_calendar_2015-16_nyc.pdfIn PDF document text
    • https://s3.amazonaws.com/zumezeviwakiz/90699475924.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2be0b0b6b03258f416bd5/t/5fc7665ac7c45a5eafa5e9dc/1606903386902/44228511451.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc554acbd14ff0dd2ba05e0/t/5fc686b1e6d49a06bb764040/1606846129186/tufuvawitafibozisemam.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0de9c5bcb0228a2825217/t/5fc1d4e8f3de5e49b5a7d0ce/1606538473395/la_fitness_mt_laurel_schedule.pdfIn PDF document text
    • https://s3.amazonaws.com/jipowumat/jiroliwavapigiraxofazifaf.pdfIn PDF document text
    • https://s3.amazonaws.com/lorifumofelu/mx_male_enhancement.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e8370f63-24b2-46d8-a79b-47397ca0b684/smith_auto_sales_saluda_sc.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/de7f47f0-d73d-48f2-9ac7-4399fa6012e5/pure_romance_gift_certificate.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/830d6871-fd30-4278-ba1c-2ebcc1dee987/90815635225.pdfIn PDF document text
    • https://s3.amazonaws.com/gewisetug/zegowemupomo.pdfIn PDF document text
    • https://s3.amazonaws.com/pexodugosa/ronosejorabumomefebud.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_off0000d371.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD371 5164 bytes
SHA-256: d5d75327d7dfd418ddb22caa8b4ab74939cf90db0f2f43786df058ab3c453807
font_01_sfnt_off0000e520.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE520 10884 bytes
SHA-256: 5941e522c83ab875303f5446f87f169ad0fbff0755263a4d5e446156ae4d24d2

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