Malicious PDF — malware analysis report

Static analysis result for SHA-256 c29c0975baa21834…

MALICIOUS

PDF

32.4 KB Created: 2020-08-24 22:40:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c2cada3238293d3812e7ec4f4eb135f4 SHA-1: f692ce8a036558750a0896a59c2e98185dde5ddb SHA-256: c29c0975baa2183408b3d72ac2a58fe16598528e6040563993ccbe946742f5a8
150 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a link farm. One of the primary links directs to a known malicious redirector, ttraff.cc. The ML classifier also strongly indicated maliciousness. The document body contains garbled text but includes the URL that triggered the PDF_MALICIOUS_REDIRECTOR_LINK heuristic, suggesting a lure or redirection 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.cc/pify?keyword=rifd+aicte+full+form
    • http://files.authorbettyadams.com/uploads/1/3/2/8/132814024/f6601d1b0c9.pdf
    • https://cdn.shopify.com/s/files/1/0435/8812/4831/files/77385409190.pdf
    • https://cdn.shopify.com/s/files/1/0440/5025/1941/files/sesumixabib.pdf
    • https://cdn.shopify.com/s/files/1/0451/9346/1909/files/ecg_rhythm.pdf
    • https://cdn.shopify.com/s/files/1/0435/0358/3384/files/toxudumegozuzevaf.pdf
    • https://cdn.shopify.com/s/files/1/0432/0703/2990/files/punjabi_remix_songs_2019.pdf
    • https://cdn.shopify.com/s/files/1/0431/4087/4408/files/49384529372.pdf
    • https://cdn.shopify.com/s/files/1/0437/8168/5406/files/xizirixivusawezidogaja.pdf
    • https://cdn.shopify.com/s/files/1/0434/9689/8724/files/esclerosis_multiple_signos_y_sintomas.pdf
    • https://cdn.shopify.com/s/files/1/0435/2419/4468/files/flushing_meadow_park_map.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000044c2.bin
753455a33eb4810095d580c9d527bf3eb13efc01dbb14961bafd828a80ed772c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x44C2 4996 bytes
font_01_sfnt_off0000559f.bin
eecaa506df3e30534a8a9fb5ff818a8387d90a9408b50041bef54c200153fd5c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x559F 9320 bytes

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