Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b7064757a939ba2…

MALICIOUS

PDF

48.7 KB Created: 2020-08-30 00:58:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 87d16d904619eb056bda58de28b6da4c SHA-1: 0ca0e9830d01286dd4d9437c90ec1c51aa49d6c5 SHA-256: 8b7064757a939ba2fe6ab1f8c1f7d81a41797451a21c07cda77914cf26139689
120 Risk Score

Malware Insights

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

The PDF was identified as malicious due to the presence of a large number of external links, a technique often used for SEO manipulation or to redirect users to malicious content. One of the primary links points to a known malicious redirector infrastructure at 'ttraff.ru'. While many other links point to benign Shopify domains, the presence of the malicious redirector is a strong indicator of malicious intent.

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.ru/wix?keyword=commentaire+un+barrage+contre+le+pac
    • https://cdn.shopify.com/s/files/1/0432/3731/0626/files/exemplo_de_texto_dissertativo_argumentativo.pdf
    • https://cdn.shopify.com/s/files/1/0463/2615/3371/files/os_efeitos_cognitivos_da_comunicao.pdf
    • https://cdn.shopify.com/s/files/1/0440/5451/1766/files/u_letter_photos.pdf
    • https://cdn.shopify.com/s/files/1/0431/1249/7305/files/mofedivikovogifewazidel.pdf
    • https://cdn.shopify.com/s/files/1/0450/6599/4392/files/libro_calistenia_yerai.pdf
    • https://cdn.shopify.com/s/files/1/0432/8102/3140/files/24838331060.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/30036161276.pdf
    • https://cdn.shopify.com/s/files/1/0435/3828/4699/files/fiddlestix_paperie_label_template.pdf
    • https://cdn.shopify.com/s/files/1/0433/7080/7459/files/boeing_737_max_crash_report.pdf
    • https://cdn.shopify.com/s/files/1/0430/8611/9079/files/79967554106.pdf
    • https://cdn.shopify.com/s/files/1/0432/6490/1284/files/fenusafanajozivim.pdf
    • https://static.usrfiles.com/ugd/67e251_b0376f06fd10455e91fe9fa793d66c07.pdf
    • https://static.usrfiles.com/ugd/c6ac46_2e7b69979139496ea4151e5ea4b99135.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_off00007cf1.bin
edb6f2b30d070cba4d4c0c848aa3d248180b433e2f18e6f5239a37f212c7ab01		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CF1 5120 bytes
font_01_sfnt_off00008e3d.bin
33c68c35f59fec8d241bcdba4d62af8feedd844b5b54fa88f8b0e2874b007f3a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E3D 12328 bytes

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