Malicious PDF — malware analysis report

Static analysis result for SHA-256 969c17fae958c0f2…

MALICIOUS

PDF

44.7 KB Created: 2020-11-05 15:56:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: bd66d69cabbb6f589e14f7b0612417eb SHA-1: de4d59a87cfa39d8c9ffe200247d2b051f7783c8 SHA-256: 969c17fae958c0f20d0926540f88614fac476df3ac23d8bb1a1a1e0f32441857
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://gettraff.ru/aws?keyword=writing+logically+thinking+critically.pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4416661/normal_5f9c34b78c357.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369932/normal_5f885f3883895.pdfIn PDF document text
    • https://donokodupotev.weebly.com/uploads/1/3/4/3/134317189/zidomirubivof-zawasemuso.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365661/normal_5f8ee981b6a17.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/xupovobejanam/97003547988.pdfIn PDF document text
    • https://s3.amazonaws.com/viboxikuz/talir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/374f6c96-8b4d-4369-b057-d2e259ae8f96/delotuzapalenipumeva.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c9f5cdc-b113-415a-aa19-4ded2836220c/qualcomm_atheros_qcwb335_driver.pdfIn PDF document text
    • https://s3.amazonaws.com/winumigutam/riley_inside_out_image.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e026b891-ba02-4413-8555-49fc21e38bf2/50669472120.pdfIn PDF document text
    • https://s3.amazonaws.com/gofiguj/dla_piper_partner_vanina_guerrero.pdfIn PDF document text
    • https://s3.amazonaws.com/zalomi/bacteriologia_resumo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d17881fb-6f9f-4ab0-828c-1d7e62dd2d4b/piwevumorifax.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_off00006c94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C94 5452 bytes
SHA-256: 15db3c94d3d826103c4f065b1cdd2686e1ac0f68633be305e75246e6cf816f11
font_01_sfnt_off00007f35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F35 11756 bytes
SHA-256: 603c13dfc0213ac7d9e0d214a490cc6cd3247fc4beea228fe2ff2348dd471caf