Malicious PDF — malware analysis report

Static analysis result for SHA-256 629e4f0f3015dd9f…

MALICIOUS

PDF

38.6 KB Created: 2020-10-30 10:09:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 3c8a764a40c43aeb5c6d2455084af9a6 SHA-1: d6dd3c3608014add9e2ee488768defecfa05dd5b SHA-256: 629e4f0f3015dd9f0e5f1ad241189a72e4bb028cbc5551215aaf04d9165c92e6
94 Risk Score
Tags
free-cdn-ebook-manual-lure

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=streets+of+laredo+cast+1949 In PDF document text
    • https://lodirunesu.weebly.com/uploads/1/3/0/8/130874391/wumokupitu.pdfIn PDF document text
    • https://funiwulew.weebly.com/uploads/1/3/2/8/132814073/3cdbd55ce.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373271/normal_5f8d971fe1ab2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375696/normal_5f8cc06609c28.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/1/0501/4631/2385/files/fidezexezedavom.pdfIn PDF document text
    • https://s3.amazonaws.com/tutapaxi/6740012001.pdfIn PDF document text
    • https://s3.amazonaws.com/vuraradaso/bangla_book._blogspot.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d80961d2-846b-4d17-91fd-ef326d3a8715/32561910471.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/lokokawepusa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/780f1b58-6320-4ad7-8622-9ce30a3b93d4/jozetasatoxut.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/58a42211-9794-4b52-890c-fa4a7663ad1f/19851518573.pdfIn PDF document text
    • https://s3.amazonaws.com/buponuwebi/nanewuxikaxuf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/57cb0071-c3de-4697-be43-69313c9f1ab5/no_h_dia_fcil_livro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/4743/4440/files/73419378142.pdfIn PDF document text
    • https://s3.amazonaws.com/jasadavebaga/naravolivurofovoxajal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c3fc4704-f2b9-4f36-9f7d-293a1bba5355/lfs_jant_yamas_indir_tamindir.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_off00005455.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5455 5416 bytes
SHA-256: a69243832337a6e81f98602df28b031ddbe7e0a5988800a75b108c844cbce486
font_01_sfnt_off000066cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66CF 11748 bytes
SHA-256: e0a5bb7d79802acfe90180b7d5225a89f86efa7e6886444e18e2f4dc7155c3d5

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