Malicious PDF — malware analysis report

Static analysis result for SHA-256 b24b0be4406eaa3e…

MALICIOUS

PDF

44.2 KB Created: 2020-09-22 00:20:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a5b1c6d0e91ff2fef6e2d05e78d7e4f6 SHA-1: ea150489a1728b1b5b5c06a5f96a8f6bc6fa2609 SHA-256: b24b0be4406eaa3e4c8690a6fc74c18348051efd73a6e474f794ef3df1e259c0
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded links, with at least one pointing to a known malicious redirector. The ML classifier also flagged this PDF with high confidence. The document body appears to be obfuscated or corrupted, but the presence of the URL 'https://ttraff.club/wix?keyword=ab+lounge+ultra+reviews' and the PDF link farm heuristic strongly suggest a malicious redirection or SEO spamming attempt.

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.
  • 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.
  • 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/wix?keyword=ab+lounge+ultra+reviews
    • http://rigogoj.doorandwindowplus.com/uploads/1/3/2/8/132814975/bawesujepisixogorolo.pdf
    • http://files.michellejensen8.com/uploads/1/3/1/8/131856698/lebijoni.pdf
    • http://files.kickapoovolleyball.com/uploads/1/3/0/8/130814515/0ef50fec9265.pdf
    • http://kugir.seedsofagape.com/uploads/1/3/1/4/131454526/tikuronezuwikip_joxilas_rafuv.pdf
    • https://cdn.shopify.com/s/files/1/0459/9473/7821/files/free_printable_punctuation_worksheets_ks2.pdf
    • https://cdn.shopify.com/s/files/1/0427/9074/8316/files/tesinureka.pdf
    • https://cdn.shopify.com/s/files/1/0479/0999/4662/files/90899843675.pdf
    • https://b1f3846f-8f97-47bd-9ff4-fa3e60066e48.filesusr.com/ugd/1e533a_9e6846a47eec4bce8617867b211a8472.pdf?index=true
    • https://71d94710-41c5-43ba-8f87-6ccd5236f102.filesusr.com/ugd/8716ab_d7650e09e7cb42438d4510e758ee7115.pdf?index=true
    • https://d8e62890-4fe5-4dc8-b344-99320334608d.filesusr.com/ugd/405339_80ce8b6ae4ca4e14bbce8a72492bd4b5.pdf?index=true
    • https://609e11af-81c4-45ff-9d6d-2a40c6df23e8.filesusr.com/ugd/07625c_97a297959baf487b9323d9286517b85d.pdf?index=true
    • https://1047b778-3d55-45ed-b98f-d89ab29f6046.filesusr.com/ugd/8e7730_5608b6970070400583a70a97cb86207e.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006306.bin
7e4ae38c1e49e1c9dcf9533f7f9c86fee56a9d5eea7d9d57da6c676ce26fd557		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6306 5016 bytes
font_01_sfnt_off00007432.bin
c47b88c0e695cd6219d1aa899e2bb5f4f40d20e16f50d95d0f92f05dff008a24		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7432 10008 bytes
font_02_sfnt_off0000966f.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x966F 4324 bytes

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