Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4f362d4c7169750…

MALICIOUS

PDF

83.3 KB Created: 2020-12-02 23:16:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: dcdae2b7ef475644f938f3a91c5ae9a0 SHA-1: 97afa9124fe25da47b84dcbf8bd12e45bdf3c46c SHA-256: e4f362d4c71697501025e1f17f6675a19251500c7e8ea38416fb521ac11fd3b7
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 0.9995

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://cctraff.ru/strik?utm_term=effective+training+systems+strategies+and+practices+5th+edition+pdf+free In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366367/normal_5f8dde0881a2d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481059/normal_5fb8315227c43.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450036/normal_5fa1423bcc8e3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407986/normal_5f9fbd9a20732.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc6ac03085bf90c0e256974/t/5fc799c1e2dcb1274df4742a/1606916546263/wwe_battlegrounds_roster_dlc.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf6c0a3485235c86bef311/1606380555669/holloway_funeral_home_durham_nc.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd4145b2-0d57-4336-a7b8-5315c760dd39/xejetirutape.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc013b624b06a7eb3fa8a9b/t/5fc16c13cb3e0f5771853f74/1606511637512/windows_2000_advanced_server_sp4_product_key.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0ed012e537a05ef0936a0/t/5fc32eb16457125654a429bb/1606626995309/liranodufekafokasubil.pdfIn PDF document text
    • https://s3.amazonaws.com/zemunomipazikez/b_a_pass_2_movie_utorrent.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0f06b104edf1d7780fa74/t/5fc14deefa04221c71500725/1606503922646/f_girl_names_hindu.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f48c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF48C 2940 bytes
SHA-256: 81edd6488f6460e859cd307815cd874b5555648f856168d38583133790b0e45a
font_01_sfnt_off0000ff18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF18 5780 bytes
SHA-256: 5c8b4be029eb11ec3a8db38db4bba6b1296afff3395a53ee9d09d37ebc777faa
font_02_sfnt_off000112b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112B4 1800 bytes
SHA-256: 6d2a3a16cc464ce72cf05976c7f96a31c93af2202e0dc760c37a694345e222ee
font_03_sfnt_off00011b44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B44 10396 bytes
SHA-256: 8776d82866c2e6da49c98d414de14ff30afc4de79c2796d135792d3f3cbdc908

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