Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc2b6c2bb1a37f6c…

MALICIOUS

PDF

38.7 KB Created: 2020-11-04 10:57:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 2879e15f61b552546550f28e01be40ab SHA-1: 7c36e7ae0ba1f6974b7054ecd91dbbf1071ab05f SHA-256: cc2b6c2bb1a37f6c5c61630ca4d3240d67d087e05af7daecc8b3fec4374ab2d4
134 Risk Score

Malware Insights

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

The PDF contains a link disguised as a free ringtone offer, which redirects to known malicious infrastructure. The ML classifier also flagged this PDF as malicious with high confidence. The document body contains obfuscated text and a URL, suggesting an attempt to trick the user into navigating to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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=free+country+ringtones+for+iphone+7 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4413362/normal_5f95737ce661d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371247/normal_5f8af8573146b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366376/normal_5f97fbc4a46f5.pdfIn PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/d96ddb407408.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403271/normal_5f9a6dbb82cd0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380229/normal_5f9dfb5447d6c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369769/normal_5f942ed3e1dfd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368949/normal_5f90e821cdb60.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/2efbe1c1-26d9-43ba-9700-9385603a7492/suporavawuwas.pdfIn PDF document text
    • https://s3.amazonaws.com/banula/telugu_rasi_phalalu_2015_to_2016.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c22d612-7e60-4858-af08-1ba15d71c8ad/kebodiru.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_off00005adf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5ADF 5172 bytes
SHA-256: e4bca774cd67e1a13c1b218631bef442a213fa01fc68986eecf6f31c0132b9be
font_01_sfnt_off00006c95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C95 9832 bytes
SHA-256: 16b888cb0e0d700864d753c70972b92a72daa3356fb5ff6aa5280a5836addc5a