Malicious PDF — malware analysis report

Static analysis result for SHA-256 50777cadb07c76de…

MALICIOUS

PDF

43.4 KB Created: 2020-08-30 05:47:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7f5f44d57c55eb294507cd8c79dde998 SHA-1: f2a5001cc4ca68f33e4384d98ee7811decc8c908 SHA-256: 50777cadb07c76de20da95cedc407e109b3e1c73fbeefea4a6ba4f1309f09bd2
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one identified as a redirector to known malicious infrastructure. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external PDF links, suggesting an attempt to create a link farm or distribute malicious content. The primary malicious URL identified is https://ttraff.ru/wix?keyword=suramar+quest+guide. No scripts were extracted from this sample.

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=suramar+quest+guide
    • https://cdn.shopify.com/s/files/1/0435/0243/6512/files/gomuxidaliso.pdf
    • https://cdn.shopify.com/s/files/1/0436/8701/8649/files/http_s10._bit._ir_password.pdf
    • https://cdn.shopify.com/s/files/1/0427/7328/2983/files/dopedolupapusamaro.pdf
    • https://cdn.shopify.com/s/files/1/0437/5996/0218/files/67042989611.pdf
    • https://static.usrfiles.com/ugd/b8c837_2da413f5cc3649dbbd2e5839352d23f0.pdf
    • https://cdn.shopify.com/s/files/1/0434/0786/8060/files/zajudofopuwogi.pdf
    • https://cdn.shopify.com/s/files/1/0430/3477/1610/files/kyocera_cell_phones_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/3825/2957/files/22203548863.pdf
    • https://static.usrfiles.com/ugd/b8c837_a1ccccb3e0484a8fbc947a367d1542cd.pdf
    • https://static.usrfiles.com/ugd/b8c837_82978ccb474743e383af397d10f35d19.pdf
    • https://static.usrfiles.com/ugd/d2751c_bb6b643ef8cc4114a56acaa84a7516db.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_off00006c9b.bin
b96e25de3e66b79fab9c9ecf86d0b5a250369491074504a536bac15c8a181e47		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C9B 5340 bytes
font_01_sfnt_off00007ea0.bin
73b4895d4b8515960fcc9593db617cc2aee061f9745d5e8ff66967dba124be98		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7EA0 10120 bytes

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