Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e04a46136891f91…

MALICIOUS

PDF

39.5 KB Created: 2020-11-06 15:19:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: b215694ebb6b3e99830cf16d88f933a6 SHA-1: ddf4e92ceef98a07c9cf50afb026f4cb774b8cd3 SHA-256: 0e04a46136891f917a267fd95b7aa4ccad931efe637dc003906f0d9a1f6d847a
96 Risk Score

Malware Insights

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

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or SEO manipulation tactic. One of the primary links, 'https://trafffe.ru/strik?keyword=mrs+dubose+in+tkam+addiction', is flagged as suspicious. While no scripts were explicitly extracted, the PDF structure and embedded links indicate an attempt to redirect users to potentially malicious content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafffe.ru/strik?keyword=mrs+dubose+in+tkam+addiction PDF link annotation
    • https://vuvofazomegudej.weebly.com/uploads/1/3/4/3/134329778/6900697.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377679/normal_5f8c512555412.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365591/normal_5f8df1b9d9242.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/wapabefizosumi/salotolazajodawa.pdfIn PDF document text
    • https://s3.amazonaws.com/rekorewexidiwo/madonotalop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/65a453ef-f819-43aa-b731-cb1ac4e101a9/alkaline_diet_dr_sebi.pdfIn PDF document text
    • https://s3.amazonaws.com/matogapibelifiv/zepoj.pdfIn PDF document text
    • https://s3.amazonaws.com/bidivo/53331549146.pdfIn PDF document text
    • https://s3.amazonaws.com/bulozor/autocad_2018_complete_tutorial.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b3dcb0f0-afbc-4c76-a7de-33296f96fa19/putlocker_hd_is_game_of_thrones.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_off00005d8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D8D 5264 bytes
SHA-256: 860ff9a0f4313b2e952de4c3a4034ef5a794f140d65b4b660f1b265f0253d37c
font_01_sfnt_off00006f63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F63 10012 bytes
SHA-256: 4bc92585332de743172e4be55afd80eaf803d681bae21897ff5a08a6ccc82b27

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