Malicious PDF — malware analysis report

Static analysis result for SHA-256 7cb46a29e8ec6915…

MALICIOUS

PDF

56.0 KB Created: 2020-08-19 00:41:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 97018f5c993a401fd2d0e603e8918dc6 SHA-1: ebe7cba0a95002018f700766a21767ebea6e1f7b SHA-256: 7cb46a29e8ec69153823b0cff97641ba339c3b673ee954e81ff799250f974c70
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a large number of embedded links, many pointing to external PDF files, which is indicative of a link farm. One of the primary links, 'https://ttraff.com/pify?keyword=chasing+waterfalls+movie', is identified as a malicious redirector. This suggests the document is designed to lead users to malicious infrastructure, likely for further exploitation or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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.com/pify?keyword=chasing+waterfalls+movie
    • http://files.anmhomedecorandmore.com/uploads/1/3/1/8/131871439/780189.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/2451/5229/files/niribevewu.pdf
    • https://cdn.shopify.com/s/files/1/0431/9988/9569/files/29301365840.pdf
    • https://cdn.shopify.com/s/files/1/0436/7322/3321/files/centrifugation_methods.pdf
    • https://cdn.shopify.com/s/files/1/0435/5158/8507/files/4732581562.pdf
    • https://cdn.shopify.com/s/files/1/0434/4181/5718/files/11311491945.pdf
    • https://cdn.shopify.com/s/files/1/0448/0453/8528/files/gijusapofasufipokodipigu.pdf
    • https://cdn.shopify.com/s/files/1/0435/3523/7269/files/santa_monica_surf_cam.pdf
    • https://cdn.shopify.com/s/files/1/0429/8863/4263/files/sivebu.pdf
    • https://cdn.shopify.com/s/files/1/0436/7102/7865/files/80504937949.pdf
    • 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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009e54.bin
914248577aebe6497f7c22204660bcaeebbba802dcfe44ac8a4991eb558532aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9E54 5236 bytes
font_01_sfnt_off0000b00f.bin
3f9bef9b0d77ed81157e533f9b247e276428b6ca6ce0d140c1cfc6ebdb8df4b7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB00F 10444 bytes

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