Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4bea5cd7952dbf6…

MALICIOUS

PDF

84.8 KB Created: 2020-11-25 21:47:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 021c9f978fde74d7afe88a189344b752 SHA-1: 77fd84b0afb83016c954e7516042bd321060e387 SHA-256: e4bea5cd7952dbf6179d0db46d7800c20bbae51011407864674a9cd73b9c4302
96 Risk Score

Malware Insights

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

The file is a PDF with a high ML classifier score and ClamAV detection, indicating malicious intent. It contains an embedded URL pointing to a suspicious domain, likely used to deliver a payload or phish for credentials. The PDF structure and embedded objects suggest it's designed to exploit vulnerabilities or trick users into visiting the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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=mercedes+schneider+common+core PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4503791/normal_5fba5c156b734.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4504839/normal_5fb5b504609a2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366008/normal_5f86f54d4847e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422628/normal_5fa207ddaa4bd.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/baxegezivumi/azure_devops_server_2019_express.pdfIn PDF document text
    • https://s3.amazonaws.com/wesezuzuvalirik/21587558362.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/medical_biochemistry_notes.pdfIn PDF document text
    • https://s3.amazonaws.com/dibedamoka/mark_rubinstein_dc.pdfIn PDF document text
    • https://s3.amazonaws.com/zoxewudunigus/burdensome_noun_form.pdfIn PDF document text
    • https://s3.amazonaws.com/xisefowu/chinese_to_english.pdfIn PDF document text
    • https://s3.amazonaws.com/nefunupu/3rd_law_of_thermodynamics_examples.pdfIn PDF document text
    • https://s3.amazonaws.com/kujapomib/fluval_fx5_instruction_manual.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_off0000e89b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE89B 12864 bytes
SHA-256: 57d452f027f4560082aeac333a664411ff25feb45c1e380725b2e16a1981200b
font_01_sfnt_off000112df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112DF 4944 bytes
SHA-256: 1159b1ecfdde1ce76a76ecfaf451efea11593a3c69f9d6b26ab0956c5155112e
font_02_sfnt_off00012390.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12390 10036 bytes
SHA-256: 69018a8b39953126cb4922b48aa37a2b0ab00c21aeb6e283ec39d6166d230e92