Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e30ae8f04ceb90d…

MALICIOUS

PDF

35.4 KB Created: 2020-11-03 14:26:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: dcfccb77b71d9da1820e1b27c1adfbd4 SHA-1: dc537790d05b638e14934e2b1ba646173637ba90 SHA-256: 0e30ae8f04ceb90de4e3773157dc5a0d0e06036ca7167cb592b114db141b0363
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://ttraff.com/123?keyword=1066+game+unblocked In PDF document text
    • https://fibuwuvonej.weebly.com/uploads/1/3/4/2/134265895/0373b3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369496/normal_5f98d6c339952.pdfIn PDF document text
    • https://razesupimo.weebly.com/uploads/1/3/2/8/132815812/kulirik.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369522/normal_5f8ce14067e1e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366306/normal_5fa0c0ce61b26.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366335/normal_5f8773c252400.pdfIn PDF document text
    • https://wisizexabebaj.weebly.com/uploads/1/3/4/4/134461468/5046142.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/vinivuxo/naxusujip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c9e9212-f983-4c39-9dad-944c1c5f1e67/mesafavumuvun.pdfIn PDF document text
    • https://s3.amazonaws.com/sikuva/balistica_forense_libro.pdfIn PDF document text
    • https://s3.amazonaws.com/gafedupeba/diagrama_bimanual.pdfIn PDF document text
    • https://s3.amazonaws.com/mexesazaxasa/palmer_public_library_alaska.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_off00004a6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A6D 5444 bytes
SHA-256: 8662496ff722ba9d074549fb3d5b9ebad40e3e6af708b26d17fa2aa5ac6e6e6c
font_01_sfnt_off00005ce2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CE2 10628 bytes
SHA-256: 148c221dcbc9b3aaa01a728f77a436adedb562d0b0ad7f25b7e3aa2a30d94193