Malicious PDF — malware analysis report

Static analysis result for SHA-256 3194727d84d323bf…

MALICIOUS

PDF

46.5 KB Created: 2020-11-04 15:39:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 20a785e12fd10ef639dc62c115aa7ab3 SHA-1: 2169dd637ff2022b3adee3b0c2fd4b0988d5876d SHA-256: 3194727d84d323bf801cb785aabdedb2bfd161a95b3b140c9719d8731bb1a26e
94 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by 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 1.0000

Heuristics 3

  • 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/123?keyword=examples+of+character+vs+character+conflict In PDF document text
    • https://pogedufofow.weebly.com/uploads/1/3/4/5/134512351/xavitedof.pdfIn PDF document text
    • https://wotafoxig.weebly.com/uploads/1/3/4/3/134306194/mikuxizexuxew.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372987/normal_5f8cbf84bb611.pdfIn PDF document text
    • https://poxuxeket.weebly.com/uploads/1/3/3/9/133997588/5733172.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391302/normal_5f959a8f8f66e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425507/normal_5f9bc39217320.pdfIn PDF document text
    • https://lukozosa.weebly.com/uploads/1/3/4/4/134485969/4705434.pdfIn PDF document text
    • https://palekamenagogu.weebly.com/uploads/1/3/2/6/132682235/jomubazip.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403687/normal_5fa0541c8bda3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/susopuzupure/el_increible_mundo_de_gumball_wiki.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/kenovatigeda.pdfIn PDF document text
    • https://s3.amazonaws.com/gifojuxaxeva/33771531072.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C4E 5128 bytes
SHA-256: 892f9ada60480a589fd3336f51e8d625a4275628845f40d35ae665f1b09d87bb
font_01_sfnt_off00007d9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D9D 9660 bytes
SHA-256: 8ebc5f05586afa8d4f79cfafc974cb010acf6f29e738e3f6ff4af0adac73f185
font_02_sfnt_off00009ea3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9EA3 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34