Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd87a910ebfff187…

MALICIOUS

PDF

74.9 KB Created: 2021-02-23 16:55:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 33771ffd53fd36b4834baabaff142165 SHA-1: 914eaa81df2d23192bcff64a0997065a715d0e51 SHA-256: dd87a910ebfff187aa034884651a574ad2c8e972a8a4a4f9203c8bb967c9714a
96 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection for Pdf.Phishing.Trojan and an ML classifier indicating maliciousness. It contains an embedded URI pointing to a suspicious domain, likely intended to host a malicious payload or redirect the user to a phishing site. The document body, though heavily obfuscated, suggests a lure related to a PDF document, further supporting a phishing or malware distribution attempt.

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://baarspo.ru/wix?keyword=small+giants+bo+burlingham+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4384037/normal_5fedbe92a0431.pdfIn PDF document text
    • http://stroymarketmetal.ru/bahubali_2_tamil_movie_ringtonecr205.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407070/normal_60292ea06665b.pdfIn PDF document text
    • https://cdn.sqhk.co/fifenije/hgE50rn/zogumuw.pdfIn PDF document text
    • http://complect-tech.ru/11703975747d7xwd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416496/normal_5fd3ce779fd0e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409095/normal_601bab39863c6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367268/normal_5ffe7077d5394.pdfIn PDF document text
    • https://cdn.sqhk.co/sovanoniwuva/hcNTgdm/univision_41_noticias_numero_de_telefono.pdfIn PDF document text
    • http://hargotel.xyz/69686352302dmkh.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419001/normal_60176faea698d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488332/normal_5ff9364ab86f8.pdfIn PDF document text
    • https://cdn.sqhk.co/dosakupu/jhjbgfh/dexasapu.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/gopuze/management_skills_interview_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/tenunud/gesagesidokebuvin.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_off0000e7f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7F2 5696 bytes
SHA-256: a5bb9412e9c7575215b902686a8b9cff1a84d607652750bab030c0f4f358a607
font_01_sfnt_off0000fb1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB1C 10476 bytes
SHA-256: 34567f79025e4d7eb7761e8f49377c2698a72acde2840c2a8cf740a0ad2ef693