Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0035b314506f08e…

MALICIOUS

PDF

41.8 KB Created: 2020-11-02 09:42:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 990158dbad40562109ec2d71e44e6e42 SHA-1: d648217630026ab84caa655dd9dc5cbb492b974b SHA-256: a0035b314506f08e17c7d950297aecde034a7d9344101fcd8bf753a0f6143fb2
94 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by 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 1.0000

Heuristics 3

  • 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?keyword=directions+to+circus+circus+las+vegas+nv In PDF document text
    • https://nakumupapetiz.weebly.com/uploads/1/3/2/7/132741615/litixugakibejopuk.pdfIn PDF document text
    • https://nijubalalo.weebly.com/uploads/1/3/1/4/131453980/zopifoxeke-sorepopunilosiz-vumapetewi-vedonewogofako.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403805/normal_5f93ee98b1a4d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366011/normal_5f8dd75a5732f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403418/normal_5f985497458af.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/dutimajizowa/carotide_externe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae2813f6-7de2-48a6-9686-818d0d096ebf/rotaduk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a6d2b8f7-f59a-4ab8-a6e4-87d4d4ef6306/vokizefowubokubipifofel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/13827432-7db8-4aae-aba1-267318867292/nuxige.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/608fe462-e167-4889-9e27-8fbeb1dcab3d/dead_men_tell_no_tales_full_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/nademopor/oatey_fix_it_stick.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/177f5afd-a622-41c9-b729-fc0f2dcdd5b7/21134930655.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000057f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57F1 4908 bytes
SHA-256: 17f0ae94c4b39000484345523838f0b2743cf330622f9631078b5a6f757b1b24
font_01_sfnt_off000068b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68B7 10524 bytes
SHA-256: 7c3b523ffbb9fe97ab9990ff9423a70b0c174e35a5bd29213f04c80a46beaeb2
font_02_sfnt_off00008c3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C3D 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2