Malicious PDF — malware analysis report

Static analysis result for SHA-256 119bb336ef3568de…

MALICIOUS

PDF

84.4 KB Created: 2021-01-10 18:46:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 186d3658bd6a16702b34c696361d78ee SHA-1: 98be6544687eb64da9b97298ca7a06fc70addd07 SHA-256: 119bb336ef3568de44b5b73af103e770f71d3ce7afe342ca6551acc6fcc2acf5
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically identified as a phishing trojan. It contains an embedded URL that appears to be a lure, as suggested by the document body referencing 'bfa dungeon loot'. No scripts were extracted, but the presence of external URIs and the overall detection profile indicate a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffnew.ru/123?utm_term=bfa+dungeon+loot PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4447278/normal_5fdbbe7207129.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401716/normal_5f93000eba099.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418199/normal_5f9d522ab98ac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410953/normal_5fbdcf044f3f5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381344/normal_5f8d533e4e365.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392470/normal_5fe9ef965fac9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365606/normal_5f8acb0862f45.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425224/normal_5fe357f7f3e07.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446512/normal_5ff312ba17dd0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373788/normal_5f8b4284aec07.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449622/normal_5fd9b0d3b25ef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390684/normal_5fade7668297d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371807/normal_5fea1b3cd937f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off00010fea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FEA 4848 bytes
SHA-256: 40c6e5b263bcc42f50f31e29291549297ae992d6b2beea8e1da8b022d70cee25
font_01_sfnt_off00012087.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12087 10716 bytes
SHA-256: 47bcc7621c84034b9ab22b4a46f7e930b93c3d02baf8e1ba05709ce583435fd8