Malicious PDF — malware analysis report

Static analysis result for SHA-256 3363466e9b4cc1f6…

MALICIOUS

PDF

68.8 KB Created: 2020-11-11 12:53:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 3fa53e09c5e763a26f6717466ff2bda9 SHA-1: d306f143cc346cd52e9caac5784add680d2a0aac SHA-256: 3363466e9b4cc1f6f3d4ee1ff4ac7d3e7777b30734f3fe4ad13007a8f14be6ec
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to trick users into visiting a malicious site.

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
  • 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://trafffi.ru/strik?keyword=pc+isos+download PDF link annotation
    • https://moxitasa.weebly.com/uploads/1/3/1/4/131454719/nadatud_rijekido_makizogarogabo_rowujaxi.pdfIn PDF document text
    • https://lowizozexide.weebly.com/uploads/1/3/0/7/130776176/kuluvigoxi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387410/normal_5f9bd1f263b27.pdfIn PDF document text
    • https://fowulovelop.weebly.com/uploads/1/3/4/4/134468794/4269127.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387581/normal_5f8e9b8786d9e.pdfIn PDF document text
    • https://jovikuveditowe.weebly.com/uploads/1/3/0/8/130874612/5cb58f04.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378830/normal_5f8aa50572ae7.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/a631b6d4-58ba-4f9f-8bbb-72e20dfc0e98/xamugadigobimafubadowi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/886b1be6-9f65-4a93-91dd-527fe37e3af4/xasobowe.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/lonavaximak.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b6024e29-54ce-4d7c-bea7-3c852b2ef2f4/talkatone_app_download_for_windows_10.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bdae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBDAE 4932 bytes
SHA-256: 997f6cc0109de7da54859183b700bd787f2a0137875fa36d0e6756f4504a12ec
font_01_sfnt_off0000ce9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE9E 9848 bytes
SHA-256: e71b5e1d05f205d3751ea043f4aeff06c28d81d0c8b154e82680f7a54dd0fefc
font_02_sfnt_off0000f0ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0AE 16364 bytes
SHA-256: 4aebaae8935f976b13dd46450a2080676b9a37b676e43646a67186c499f7d343