Malicious PDF — malware analysis report

Static analysis result for SHA-256 4581e38ade7f5067…

MALICIOUS

PDF

192.3 KB Created: 2020-11-20 02:20:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: d0043468906e999fa638d8688cc6e702 SHA-1: 92542cfa209a5ec40215416f326956549b700a8a SHA-256: 4581e38ade7f506765d92c6b7ba28ed331fd87d4105e360a53ce9fbc64cbf92b
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is a PDF document flagged by ML classifiers and ClamAV as malicious, specifically identified as Pdf.Phishing.Trojan. It contains an embedded URI pointing to 'traffnew.ru', which is a strong indicator of a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and the presence of external URLs suggest an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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
  • 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=ming+dynasty+clothing PDF link annotation
    • https://polabufasol.weebly.com/uploads/1/3/2/8/132814050/7878871.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418000/normal_5f9dba768b719.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451033/normal_5f9f92b743b43.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377116/normal_5f8b9dd5f28f0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405467/normal_5f9a0c62b52f8.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/2a4dea9c-5c83-4045-95e0-6c6ee039fde6/6835491284.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/349e23c1-901f-47df-a7ab-1191f26b4e08/39321781581.pdfIn PDF document text
    • https://s3.amazonaws.com/jujojomojemiz/41210286585.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b816262-1102-452d-8778-8572ab1ac33c/automotive_spice_3._1.pdfIn PDF document text
    • https://s3.amazonaws.com/vogubivajavofu/99686375536.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5186335a-d632-4b5b-897c-d09ed68943b4/historia_de_la_fisica_linea_de_tiempo.pdfIn PDF document text
    • https://s3.amazonaws.com/lixasifasi/antony_and_cleopatra_summary_and_analysis.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001b408.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B408 77692 bytes
SHA-256: d3d1a54ce0b2b86d166ddb846955763474a9bf71bc04d39e3d0e152ca14c801a
font_01_sfnt_off00029808.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x29808 5212 bytes
SHA-256: 0c2dcd5b24ad16b83f992f949d86ddd0df79e74ec0db9b1a9baf329fe373d29a
font_02_sfnt_off0002a9d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A9D6 17828 bytes
SHA-256: bff0556b98c6b8fb814d2c98a05e04c693ae081d13ec840fb2a81fadfc991925
font_03_sfnt_off0002dee6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DEE6 16092 bytes
SHA-256: 9af6fc3bf9d751f70540aea0fa47faa159a3604992cda23d2adcda3ffc5346b2

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