Malicious PDF — malware analysis report

Static analysis result for SHA-256 c00aad82866fe766…

MALICIOUS

PDF

42.6 KB Created: 2020-08-22 07:06:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7d4b1446db1d49d91229dd5ca6006162 SHA-1: 6a25df69d615f7e9547a8f528543f9f142fd1f95 SHA-256: c00aad82866fe76636b097d25357ed001d7e424e020c2e74ed9317da4c6bf111
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to ttraff.com. The document body, though heavily obfuscated, contains the same URL and numerous other links hosted on cdn.shopify.com and other domains, suggesting a link farm or redirection strategy. The primary malicious URL is likely used to redirect the user to a site hosting a malicious payload.

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.com/pify?keyword=angles+of+a+triangle+worksheet+pdf
    • http://files.penelopejanejones.com/uploads/1/3/0/7/130775998/67e7683b2f2.pdf
    • http://files.cmsaerospace.com/uploads/1/3/1/1/131164358/8249943.pdf
    • https://cdn.shopify.com/s/files/1/0427/9717/0847/files/prior_auth_form.pdf
    • https://cdn.shopify.com/s/files/1/0434/4040/6684/files/48430396162.pdf
    • https://cdn.shopify.com/s/files/1/0435/0876/0735/files/arabic_alphabet_writing_practice_book.pdf
    • https://cdn.shopify.com/s/files/1/0431/5293/3018/files/authenticity_philosophy.pdf
    • https://cdn.shopify.com/s/files/1/0431/6784/2459/files/biochemistry_books_for_nursing.pdf
    • https://cdn.shopify.com/s/files/1/0437/9269/5456/files/sulijopuzikip.pdf
    • https://cdn.shopify.com/s/files/1/0429/7054/6335/files/mexuwavigo.pdf
    • https://cdn.shopify.com/s/files/1/0427/7485/5846/files/codashop_free_fire.pdf
    • https://cdn.shopify.com/s/files/1/0435/5699/5233/files/essence_of_despair.pdf
    • https://cdn.shopify.com/s/files/1/0429/9676/0730/files/anatomia_vascular_del_cuello.pdf
    • https://cdn.shopify.com/s/files/1/0432/3393/5519/files/schneider_mccb_cvs_catalogue.pdf
    • https://cdn.shopify.com/s/files/1/0435/4431/4024/files/xeguferuwudavi.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_off00005bc2.bin
1015d076e223d46116600e0948fc04491aa3fd82207343ece6e7a4a92372558a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BC2 5448 bytes
font_01_sfnt_off00006e51.bin
6d6c1314b1ddc68d0ea737f3eb9353b1b3728c862eaf918143cf1ef309c17e68		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E51 3128 bytes
font_02_sfnt_off00007b14.bin
1e9ceb586040fe1bdb55f60971b465ef359f53c8985a4e57e852defd2e9c3e15		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B14 9980 bytes

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