Malicious PDF — malware analysis report

Static analysis result for SHA-256 76d3d285b229b2db…

MALICIOUS

PDF

43.7 KB Created: 2020-08-27 12:39:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 813f285c8c5d2ee91fe9e86a1a6a5da9 SHA-1: 41180303231c8d97a1f426693700b41e16d6f3fc SHA-256: 76d3d285b229b2db40ae5fb54126e62bd06f3f1ba5d12e5ca2d9de024a1c0f47
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=crepusculo+2+pelicula+completa+en+espa%2525C3%2525B1ol+latino+pelisplus'. The document body, though partially corrupted, also contains this URL and appears to be a lure for pirated content. The presence of a link farm heuristic further suggests an attempt to distribute malicious links or content. The primary attack pattern involves redirecting users to malicious infrastructure.

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=crepusculo+2+pelicula+completa+en+espa%2525C3%2525B1ol+latino+pelisplus
    • http://files.donorsmatterpdx.org/uploads/1/3/1/4/131482823/b031d7eb26.pdf
    • https://cdn.shopify.com/s/files/1/0437/8381/5325/files/17753233949.pdf
    • https://cdn.shopify.com/s/files/1/0468/1636/2650/files/vemamenaluvuzixase.pdf
    • https://cdn.shopify.com/s/files/1/0461/9131/3059/files/swimlane_flowchart_template_excel_free.pdf
    • https://cdn.shopify.com/s/files/1/0429/2883/2675/files/neledozux.pdf
    • https://cdn.shopify.com/s/files/1/0437/7578/7162/files/bogle_little_book.pdf
    • https://cdn.shopify.com/s/files/1/0427/6954/7431/files/things_that_matter_charles_krauthammer_free.pdf
    • https://cdn.shopify.com/s/files/1/0428/4206/3004/files/zolpidem_dosis.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000057c5.bin
175d04a58290afc403535bc91feeece387f1f7f977dc91bfdfda688ff8e04d68		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57C5 5328 bytes
font_01_sfnt_off00006985.bin
3c140f12dca25072839b1ed763fdd2687f5a67f6687bcac19fca3cb4ffb7c063		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6985 12356 bytes
font_02_sfnt_off00009150.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9150 4324 bytes

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