Malicious PDF — malware analysis report

Static analysis result for SHA-256 452d26b5c9793149…

MALICIOUS

PDF

86.7 KB Created: 2020-11-19 04:21:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: bb03513a46f293c2e527c04569fb4248 SHA-1: 157acd511864f43119fab43c300ab12656aa1a0a SHA-256: 452d26b5c9793149fb48ad59556eb2b8b172557dd5d5e61589b5275734a0658e
154 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 as malicious by ClamAV and 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 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://traffmen.ru/strik?utm_term=garrison+cap+insignia+placement In PDF document text
    • https://cdn-cms.f-static.net/uploads/4370996/normal_5fb374804b631.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423429/normal_5fab2ab06f741.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408323/normal_5fa857bc596ff.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368746/normal_5fb5c7291bf83.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380682/normal_5f908a51d626d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373241/normal_5f91c89947133.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/jeponowon/pbs_evolution_great_transformations_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/divelikubapiwaj/28812493531.pdfIn PDF document text
    • https://s3.amazonaws.com/xozeb/kekabaxekoxirinijonag.pdfIn PDF document text
    • https://s3.amazonaws.com/dakebesuvum/fishing_report_upper_tampa_bay.pdfIn PDF document text
    • https://s3.amazonaws.com/kezemiradigu/16678840375.pdfIn PDF document text
    • https://s3.amazonaws.com/gavexilatuvitaz/database_examples.pdfIn PDF document text
    • https://s3.amazonaws.com/jagux/viwaxilafituso.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d836aeb0-ae1c-4390-aec3-3726e9eeaf94/dujavanakoxipasevisosu.pdfIn PDF document text
    • https://s3.amazonaws.com/kewakuko/pukuboniz.pdfIn PDF document text
    • https://s3.amazonaws.com/bajapovogam/petland_kahala_closing.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

Related samples 4

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010734.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10734 5072 bytes
SHA-256: 5277d610db9b19165724be935b90244bfc8a373279aff41b6d11ea8c7553bd6a
font_01_sfnt_off0001185a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1185A 12212 bytes
SHA-256: 6e20b3f3278c6da63131cb509571eaa5fc5c8e911b10ab063bc9fec75fc4bd7f
font_02_sfnt_off00013fbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13FBB 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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