Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bb6ab3b7cc580f7…

MALICIOUS

PDF

43.1 KB Created: 2020-08-31 02:16:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 52a6c951ad2bb795362773846c4184dd SHA-1: 359558eb998bee0dd8a56d2957f2e694769b836f SHA-256: 3bb6ab3b7cc580f7a9b0340fdb4f3a2e8ed0d2fd237ecc32e9749484384c1755
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to the presence of a large number of external links, a technique often used for SEO poisoning or to distribute malicious content. One of the embedded URLs, 'https://ttraff.cc/wix?keyword=derece+radyan+d%25C3%25B6n%25C3%25BC%25C5%259F%25C3%25BCm%25C3%25BC', is flagged as a known malicious redirector. The document body contains garbled text and embedded URLs, further supporting the malicious intent. The primary attack pattern involves luring users through a link farm to a malicious redirector.

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=derece+radyan+d%25C3%25B6n%25C3%25BC%25C5%259F%25C3%25BCm%25C3%25BC
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/32773531818.pdf
    • https://cdn.shopify.com/s/files/1/0432/7122/5494/files/baluzodibugus.pdf
    • https://cdn.shopify.com/s/files/1/0430/6560/6301/files/zomokufume.pdf
    • https://cdn.shopify.com/s/files/1/0428/9570/4227/files/25686740363.pdf
    • https://cdn.shopify.com/s/files/1/0431/3966/1981/files/bangla_comic_books_free_download.pdf
    • https://static.usrfiles.com/ugd/ea78e0_d3944a4a68f04dbbb7a179ac3c2bc8c0.pdf
    • https://static.usrfiles.com/ugd/5a1791_16970477f37c45d79c227433bd99bb46.pdf
    • https://static.usrfiles.com/ugd/b8c837_c63e815e773a4c7ea93a1fa3253f668e.pdf
    • https://cdn.shopify.com/s/files/1/0431/2684/9700/files/dogede.pdf
    • https://cdn.shopify.com/s/files/1/0430/9535/9641/files/50555753892.pdf
    • https://cdn.shopify.com/s/files/1/0431/6731/8167/files/not_your_daughters_jeans_sale.pdf
    • https://static.usrfiles.com/ugd/a58b01_e65a7bd6d12c4e34b62d680eb4df3c62.pdf
    • https://static.usrfiles.com/ugd/b11f6d_4cabff7b27b74711bf6828fc538ae5b0.pdf
    • https://static.usrfiles.com/ugd/b8c837_377eb5b8a1364edd89a3078e171b4596.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_off000062a2.bin
a10063bf22de750b3fa0afda32f4940f59d014ad7452151cb5c2a79b9521d680		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62A2 5480 bytes
font_01_sfnt_off000074bf.bin
e8faf8a68464a1497d88ff3af69af9325f1af9112e3a93d1c9e73fa46a0f3382		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74BF 13224 bytes

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