Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3ccb4ac92110b45…

MALICIOUS

PDF

49.0 KB Created: 2020-08-14 18:13:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 838e743c0e1cd7f21b12d1ef00648378 SHA-1: c0b901a4e022c3773db10be96f6b5ec9db3c4623 SHA-256: b3ccb4ac92110b4591008cba188aeecbe68eef0530c8f6ddab1bc0b09e29337c
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one critical heuristic firing indicating a link to known malicious redirector infrastructure. The primary malicious URL is https://ttraff.ru/pify?keyword=microsoft+powerpoint+design+templates+2010+free, which likely serves as a lure to download further malicious content. The document body, though heavily obfuscated, contains references to the malicious URL and other PDF links.

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/pify?keyword=microsoft+powerpoint+design+templates+2010+free
    • http://files.talkupyouth.com/uploads/1/3/0/9/130970014/molej.pdf
    • http://jisekur.route2fitness.co.uk/uploads/1/3/1/3/131379706/6ba2094f3.pdf
    • https://cdn.shopify.com/s/files/1/0433/0009/4112/files/89339875662.pdf
    • https://cdn.shopify.com/s/files/1/0429/9443/4207/files/sajatuvexuk.pdf
    • https://cdn.shopify.com/s/files/1/0436/8711/6965/files/is_accounting_a_science.pdf
    • https://cdn.shopify.com/s/files/1/0429/8211/3433/files/54204023579.pdf
    • https://cdn.shopify.com/s/files/1/0436/4586/2041/files/asterix_en_italia_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0434/2199/1079/files/pathfinder_books.pdf
    • https://cdn.shopify.com/s/files/1/0437/3194/3585/files/lonuso.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/87899810879.pdf
    • https://cdn.shopify.com/s/files/1/0429/8473/4883/files/dupebowugepukuvivok.pdf
    • https://cdn.shopify.com/s/files/1/0434/1334/0312/files/skillpipe_to.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_off00007b15.bin
1785eaaf70d64f0313e858b00d65865758480ef4fce0b94c82475cb8cc01a6b4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B15 5900 bytes
font_01_sfnt_off00008f2a.bin
1c74e25a482ce38dea1cdb10014db6b57bf65de2ee93bca666360d585072d0c2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F2A 12776 bytes

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