Malicious PDF — malware analysis report

Static analysis result for SHA-256 c642b3dd7e0bc747…

MALICIOUS

PDF

40.0 KB Created: 2020-11-03 20:42:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 33e3d284f622f12d40ed33e4adc79714 SHA-1: db46ea602572f42349ad9d5794d05fb360449781 SHA-256: c642b3dd7e0bc747516d9cc52b21787801bfb0a467b53e65f8981491e720bf67
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/aws?keyword=path+of+the+zealot+dnd In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365594/normal_5f984bc18a058.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392877/normal_5f99a66d6bf34.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392199/normal_5f994048c1834.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389823/normal_5f994eee816e1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392463/normal_5f93a95545c7e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368770/normal_5f9d04aed4597.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/44243119-a6ef-48d4-a9a9-4a0d27601f09/tuweduperulalo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/646d0268-57d3-4685-bfe5-b6e1bf6af0a1/leluvewafanapovup.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7962591e-a0b0-4814-9abd-4d6114d57b28/97460673536.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88f31525-c661-4e26-946d-a4ca8067344b/sony_str_dh820_service_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac671fde-f042-44ce-9d96-db46ff760b40/crystallizing_public_opinion_bernays.pdfIn PDF document text
    • https://s3.amazonaws.com/dorulusof/85443108109.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e92d6ed-e976-48ad-b4cc-ef9c4d4f9c00/wekikofa.pdfIn PDF document text
    • https://s3.amazonaws.com/wibadinavosunom/approaches_to_environmental_management.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_off00005f05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F05 4772 bytes
SHA-256: ba11a9bc8178c47224026887cfa4d83f32af7650fc36f522d59d33a4252611e0
font_01_sfnt_off00006f48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F48 10548 bytes
SHA-256: 7d395c3c5696c1ced201eac16c652ce93b445e4aa0984445c1d59b61d801bc2b