Malicious PDF — malware analysis report

Static analysis result for SHA-256 420d45e79a401db3…

MALICIOUS

PDF

63.6 KB Created: 2020-12-24 06:09:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 14ad684c324fc751468a9498ddb2c4c8 SHA-1: 878f14613a36e7ebee35f1ad2f63b862bca27762 SHA-256: 420d45e79a401db36be159c60b993962237a88665ed42bcc5a963e1b4d1f57b7
96 Risk Score

Malware Insights

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

The file is identified as a malicious PDF by multiple heuristics, including a high-confidence ML classifier and ClamAV detection. It contains an embedded URL that is likely used for phishing or malware distribution. The PDF's structure and embedded content suggest it is designed to exploit users through deceptive means.

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=properties+of+water+pogil+worksheet+answers PDF link annotation
    • https://cdn.sqhk.co/muzexeragod/igdCeNC/labirinto_in_english.pdfIn PDF document text
    • https://cdn.sqhk.co/bufutoje/ihjgdLW/godadenidakeromenup.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450730/normal_5fcfae61b0656.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371514/normal_5fba4bcdcd476.pdfIn PDF document text
    • https://cdn.sqhk.co/tezakagadol/jahe1Jq/sujodelozinozedetoxefija.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/3c039a9c-8383-475d-9438-0e512fb13fc1/vascular_plant_example_sentences.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63501264-0010-40e0-a3b2-aa142b057c1f/50518930990.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/18e812c3-b4b9-4f81-a57c-426cdf2a0080/mororajeka.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0035d79e-9047-49fb-9c22-bf18e55afa78/45931204882.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a9f42fe4-436c-4fe7-b1a6-6fadc691d475/tozim.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fbff7fc7-31ca-4358-94e2-a4fb12c408d6/pakejokixazipu.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_off0000badc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBADC 5320 bytes
SHA-256: fce0b57469fa783e3a410579546898047a4c91b87ff8ff0de50e771d59d3c4fc
font_01_sfnt_off0000cd02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD02 10832 bytes
SHA-256: fd1ed40d553dace8fe6f5c1f14d9e449efd0f679e025341290591b008be182b5