Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d97f2dd60554e8c…

MALICIOUS

PDF

64.2 KB Created: 2021-02-23 02:31:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: df456eae7c5e68bfd4810d9810b2de28 SHA-1: 5cb71208ae1b445d201bd2a14efaac6833f81ead SHA-256: 3d97f2dd60554e8cf01b13e44b8cfc9e2ad6e3017bd53547e963cbe0df3ebec9
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that directs users to a suspicious domain, likely for credential harvesting or malware distribution. While no scripts were explicitly extracted, the PDF structure and the presence of external URIs suggest an attempt to exploit vulnerabilities or trick the user into visiting a malicious site.

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://seumenha.ru/strik?utm_term=forged+in+fire+showtimes PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4475577/normal_5feb654b2509a.pdfIn PDF document text
    • https://cdn.sqhk.co/kopilixa/idCFbjc/desert_animals_coloring_pages_printable.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457281/normal_6008134c3661f.pdfIn PDF document text
    • http://iciapp.xyz/will_gta_v_ps4_disc_work_on_ps5f6yos.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428342/normal_5fe702dd67b92.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392191/normal_60192c391689f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501645/normal_600fd43925e0e.pdfIn PDF document text
    • https://cdn.sqhk.co/rezeribevi/jiVhgaT/codemasters_f1_2018_steering_wheel.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367631/normal_5fd2626b428ef.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500417/normal_5fec342e930e0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492588/normal_60289c6510a6b.pdfIn PDF document text
    • https://cdn.sqhk.co/kugefiruxat/dBgidYA/dumetati.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/fupanabivote/standard_business_letter_format_australia.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_off0000bde9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBDE9 5128 bytes
SHA-256: 0672e92d8a106b00162050069f4f7230ce3aa326500f1369ce92eb9ce2c9a7ec
font_01_sfnt_off0000cf4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF4E 10828 bytes
SHA-256: 9039d4b2563fc76e62ccc40483a7f0c130cc2893d3c0b60d6975765fffb3e026