Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd50740cff04af5c…

MALICIOUS

PDF

67.6 KB Created: 2020-12-04 11:06:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 2366f5c9a8993857456cc6fc637c07d5 SHA-1: b2e2fc271eec4ae1a1e7be06f15f121cbf032eff SHA-256: fd50740cff04af5cc621e209349940aa49bd0f13f32dab46fc8f84bef3374fd7
156 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 by multiple heuristics and an ML classifier as malicious, specifically identified as a phishing trojan by ClamAV. It contains a large number of external links, forming a link farm, with the primary URL being trafficktec.ru. The document's structure and the presence of numerous external links suggest an attempt to manipulate search engine results or redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://trafftec.ru/strik?utm_term=graphing+systems+of+equations+worksheet+algebra+1 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4475875/normal_5fc944b7cebab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375196/normal_5fc165b869fda.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458616/normal_5fa150acd3782.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383450/normal_5fc8972dc8bd5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408593/normal_5f9520ca877cf.pdfIn PDF document text
    • https://wosezobar.weebly.com/uploads/1/3/1/8/131856012/kelelopitajov.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369660/normal_5f8f49d462457.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424630/normal_5fa63cf3d30fa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448724/normal_5fb9c190d0a5b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446925/normal_5fb9c84887796.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369916/normal_5f8ac273582b2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366324/normal_5f87631f3e7b3.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/ed76dd36-fd0d-4912-af15-0bc681ad8766/segenavufidabefuto.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_off0000c5e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5E9 5920 bytes
SHA-256: 2f69f05be0eab1f571fc4fe5451f8b516e6bd5a37829c339fe9b6364a0080dd0
font_01_sfnt_off0000da06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA06 11508 bytes
SHA-256: 4628a9edaa4330e4a17bdfd0e58a82e31f81bb08542247b5a77a2eb6c79ddb76

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