Malicious PDF — malware analysis report

Static analysis result for SHA-256 66731d17c3ccb402…

MALICIOUS

PDF

62.3 KB Created: 2020-12-15 11:43:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: f1ba29842046781b9e0a5bd43456730d SHA-1: 9b3214e22018848708cd4cb50d8752c437603765 SHA-256: 66731d17c3ccb4020bed8d7aca7a172214918fd6e9a0d57d8cbce27fd894704b
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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://ggtraff.ru/strik?utm_term=dallastown+high+school+marching+band In PDF document text
    • https://cdn-cms.f-static.net/uploads/4383582/normal_5f9c3b5839b5a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459174/normal_5fd655823df95.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4394060/normal_5fa2fa1429b94.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463532/normal_5fd12a9b0e51a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375080/normal_5f8b21eda1510.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481836/normal_5fac34821ad83.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/zasepo/47835145243.pdfIn PDF document text
    • https://s3.amazonaws.com/jinabom/adrenaline_lacrosse_western_shootout_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/27812a6b-d6dd-4a1e-8088-0c9a3cee7c22/xovam.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc12ec9f7cf8c75402cc175/t/5fc4358708845d09240f0ed5/1606694279643/90296924243.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b44d2638-6800-40d9-88e9-1c664e615954/focal_subwoofer_10.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/758ae7be-6061-41b9-b492-d4a533b4c645/jotijivojafozaf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9dec9c1d-1684-4a3b-aee6-0fda496945dd/56028288939.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/46d0a029-7bea-4a76-8a7c-502ac861fd4a/natural_born_charmer_epub.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_off0000b62d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB62D 5584 bytes
SHA-256: 65e6bd83e36507d7641cbd0de32e74e2bc98c80593a1c9ef80ca40eaddf9b799
font_01_sfnt_off0000c90f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC90F 9724 bytes
SHA-256: 3fa15c0df98f4ccafcc84442df8693ae47e3ef8c08206d669d7d1b75ee8b5d66

Open this report in the interactive analyzer, or submit your own file for analysis.