Malicious PDF — malware analysis report

Static analysis result for SHA-256 70046bcffe6d88df…

MALICIOUS

PDF

50.1 KB Created: 2020-11-04 16:49:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: accc6b7d82ab70cf1b7641f7d4fdba4c SHA-1: dffa4d3fb4e6c26908f96d5cd658133de7c1881b SHA-256: 70046bcffe6d88df879a916e5fa2a88c0dfbad5abadd79abbab5cf3f0dd69bdb
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://ggtraff.ru/strik?keyword=school+catchment+area+uk In PDF document text
    • https://cdn-cms.f-static.net/uploads/4378152/normal_5f8bed5b44504.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373983/normal_5f8c38252c7c3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368240/normal_5f91347fab738.pdfIn PDF document text
    • https://rulafusojuxibaw.weebly.com/uploads/1/3/4/2/134265871/maxud-tadawedesa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372100/normal_5f9e76ddb8551.pdfIn PDF document text
    • https://dekobela.weebly.com/uploads/1/3/4/3/134332871/8888942b7e0.pdfIn PDF document text
    • https://danawejenig.weebly.com/uploads/1/3/4/4/134499985/zapikubazixi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407331/normal_5f945d5debd2e.pdfIn PDF document text
    • https://mijisurux.weebly.com/uploads/1/3/1/0/131070147/fb383ccaee2b91.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371020/normal_5f8e31d68ab33.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381988/normal_5f985dd5181dd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1807/4786/files/94480419332.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0507/1598/4071/files/mimodusik.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_off0000703b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x703B 5028 bytes
SHA-256: 02a67604bc60b73324bd46bc1a6a3386c4aa070b548385e74f29bd41e9a91684
font_01_sfnt_off00008127.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8127 10660 bytes
SHA-256: acda96a6c2551f5ee8393ce810ea13eb8c4f3dfe1f955ee4d79e5ee56aa1de8f
font_02_sfnt_off0000a59b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA59B 16204 bytes
SHA-256: 532315dfdc59b350d447ad91845dd8cc72a836e684f536ab9a4305dc5b53fb8e