Malicious PDF — malware analysis report

Static analysis result for SHA-256 6bf0a54ca95009f1…

MALICIOUS

PDF

38.9 KB Created: 2020-11-01 21:54:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: b0b290fe265d7fb2fd69ecdbd3da4aad SHA-1: 189c145aff44b0a95bca29e8b8d03e08d593a620 SHA-256: 6bf0a54ca95009f110a6223fbe31eba7fb743bb4b4ab2f54744f4ec7f2683ad9
94 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, https://ttraff.club/123?keyword=custom+motorcycle+key+tags, which is a strong indicator of malicious intent. The ML classifier also flagged this PDF with high confidence. While no scripts were explicitly extracted, the presence of embedded URLs and the heuristic firing suggest the document is designed to lure users to malicious sites, likely for phishing or further 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.club/123?keyword=custom+motorcycle+key+tags In PDF document text
    • https://tusemebi.weebly.com/uploads/1/3/4/3/134316443/sitibuzuwat-bepazimefekug-wipuzu.pdfIn PDF document text
    • https://zugufavowi.weebly.com/uploads/1/3/0/8/130874222/4900efd31424701.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366993/normal_5f87d4a1bc07e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410730/normal_5f94710d1743c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378613/normal_5f8dec8ea2914.pdfIn PDF document text
    • https://segelibuvak.weebly.com/uploads/1/3/4/4/134451144/tetikuxena.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417141/normal_5f94fad246ad6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367668/normal_5f8fee34695d5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371808/normal_5f90b5cf56a55.pdfIn PDF document text
    • https://xizejaselaz.weebly.com/uploads/1/3/4/3/134357450/113485.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391000/normal_5f974211e8f43.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/0cb8d00c-a8ba-41c6-909a-763990541569/65292738704.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/2935/5432/files/68658535406.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_off00005776.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5776 5192 bytes
SHA-256: 1c97aa71d05d3731ef98173aa7421d5bd4ae44ae1b09f0e38587bd5908a70c67
font_01_sfnt_off00006911.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6911 11264 bytes
SHA-256: 2a41912249381ca9bd65205e353c5e0187536bf79c6a7903f99394c20d21d7e4