Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e2815b86d3bb9ab…

MALICIOUS

PDF

42.7 KB Created: 2020-11-01 22:35:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: cf147743ceada2a860979feb85515d68 SHA-1: 1d2f955e96359787acf7dd1fe3752596273ecf6f SHA-256: 8e2815b86d3bb9ab4728747df2d0e83c6166c93ed9747e2e02825dad3d3ed91c
94 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'https://ttraff.me/123?keyword=ladros+black+clover'. The ML classifier also flagged this PDF with high confidence. Although no scripts were extracted, the presence of a malicious URL strongly suggests an attempt to lure the user to a harmful site, likely for phishing or malware delivery.

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://ttraff.me/123?keyword=ladros+black+clover In PDF document text
    • https://cdn-cms.f-static.net/uploads/4367625/normal_5f8c1c0a04cf7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366004/normal_5f871cbe25563.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381320/normal_5f980a512d78e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391903/normal_5f988c6b843a9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386597/normal_5f963a6e4dfa1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366377/normal_5f87484b2a186.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/gofiguj/weteroj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/0683/4839/files/fire_emblem_cosplay_tutorial.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/articles_a_an_the_grammar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/6337/5535/files/church_of_the_annunciation_rosedale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9383/5432/files/46312701337.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005ac1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AC1 4492 bytes
SHA-256: 88aad354e89e98519a795d721713443d26a17b711c6daaf14e98455aeb6bce3b
font_01_sfnt_off00006a91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A91 5136 bytes
SHA-256: dbe4b18b42c7f3659fb59098050932d3f43954ea658deb14989ad4a55273bf9b
font_02_sfnt_off00007c21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C21 10080 bytes
SHA-256: ef0a48336baaaa648309479f06a92caf4be2f97e31d709a86c3c1713b762f81f