Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5ed48776f01ed01…

MALICIOUS

PDF

66.6 KB Created: 2020-12-15 00:47:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 5a040cdfc99f6f754a43bdf00c81f626 SHA-1: 2fc8d1cf4834f1716482824ce0122c29388730e8 SHA-256: c5ed48776f01ed01204b9bee95932d240b0621476986461c51daf15c9274d174
154 Risk Score

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 0.9998

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://ggtraff.ru/strik?utm_term=the+woman+in+the+window+character+summary In PDF document text
    • https://cdn-cms.f-static.net/uploads/4474457/normal_5fa9bf6f01822.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369648/normal_5fcca72acffc4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372384/normal_5fb2bf093944e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374366/normal_5fb2db29c81e3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375351/normal_5fcf3349634cb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370288/normal_5fb9fc9955694.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367296/normal_5f8c98a068d78.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370764/normal_5fbfc587ad60e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4498986/normal_5fc09cbc31d4b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459478/normal_5fc4fae9e00d9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416792/normal_5faf773342faa.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/c06766e1-11eb-42c3-8b6e-89fd2c93b5e5/al_que_esta_sentado_en_el_trono_letra_y_acordes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/05a3a58d-ec2b-41f7-a631-41635e17a6ba/87325689036.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_off0000c93e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC93E 5288 bytes
SHA-256: d3f049ce81e8375fabd8dd10ab5ccc0e29854250d52ff18b30aefa7c264018f5
font_01_sfnt_off0000db1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB1F 10052 bytes
SHA-256: dc7b4ab6bbf12bf46f04b4cbc34788c42196386af4911789e1c1448b2d82f9a1