Malicious PDF — malware analysis report

Static analysis result for SHA-256 46fbebff575b3f51…

MALICIOUS

PDF

42.8 KB Created: 2020-08-31 04:52:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 444804d2c50a7b694aa601b46cbcaf44 SHA-1: 516035d7d4b2402a4f20d785095496b5f1c6b4fd SHA-256: 46fbebff575b3f517f160b9bfc8436f71f27e7b6607295960eb84f226d1f2aaa
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/wix?keyword=nutrition+and+physical+degeneration'. This URL is presented within the document body, suggesting a social engineering attempt to trick the user into clicking it. The file also exhibits characteristics of a link farm, with numerous embedded URLs, many of which point to Shopify domains hosting other PDFs. The primary malicious URL is the most critical IOC.

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/wix?keyword=nutrition+and+physical+degeneration
    • https://static.usrfiles.com/ugd/fedf23_aeb0755b55dd4fb2843367099a6769e7.pdf
    • https://static.usrfiles.com/ugd/b8c837_1fdf14fbccdf47169eb3b1d1f1c95a63.pdf
    • https://static.usrfiles.com/ugd/93c935_73d64171b7614429bf3e789187b0ebba.pdf
    • https://cdn.shopify.com/s/files/1/0430/0223/2983/files/bhangra_songs_list.pdf
    • https://static.usrfiles.com/ugd/b8c837_a2a807880bc94fa796a6c93447feb93f.pdf
    • https://static.usrfiles.com/ugd/a43ec6_dd3d4c5f870f44ac9b8b981609069360.pdf
    • https://cdn.shopify.com/s/files/1/0434/2723/3954/files/tipos_de_anemias_en_pediatria.pdf
    • https://cdn.shopify.com/s/files/1/0431/1243/1776/files/4440821509.pdf
    • https://cdn.shopify.com/s/files/1/0433/8050/6773/files/interactive_reader_physical_science_answer_key.pdf
    • https://cdn.shopify.com/s/files/1/0454/6537/0782/files/d_letter_whatsapp_status_tamil_video.pdf
    • https://cdn.shopify.com/s/files/1/0447/1599/9386/files/books_and_authors_for_ssc_cgl_2020.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_off0000683a.bin
9afb78543f9b5912131867ff3df3874eca0619382fb19c160220b98beba5acbe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x683A 5408 bytes
font_01_sfnt_off00007a9c.bin
dc468184c1a9b49f6981f81b65571d00b5cd84b179082de5d0d262de7b13a693		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A9C 10612 bytes

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