Malicious PDF — malware analysis report

Static analysis result for SHA-256 520124a6cd573715…

MALICIOUS

PDF

51.8 KB Created: 2020-08-17 16:43:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 94baa7ce05920cf5e88e9e3b618e7ede SHA-1: 01e22830950634a2ec233d67dcb66827c41a409a SHA-256: 520124a6cd573715bf54317c093406690be9915f5df1214bcc363b8d797ef4c5
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a mass external link farm, with a primary malicious redirector URL identified as https://ttraff.ru/pify?keyword=dota+2+offlane+guide+2019. The document body, though heavily obfuscated, contains references to 'Dota 2 offlane guide 2019', suggesting a lure to entice users to click the embedded links. The presence of numerous Shopify-hosted PDF links indicates a coordinated effort to distribute malicious content.

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=dota+2+offlane+guide+2019
    • http://files.greatamericancomedyfestival.com/uploads/1/3/1/4/131454034/a572c8.pdf
    • http://valakaku.carpiserve.net/uploads/1/3/0/7/130775195/pawew.pdf
    • http://files.retirementstrategies-wi.com/uploads/1/3/0/7/130775856/bupofuvemirimiwotuxu.pdf
    • https://cdn.shopify.com/s/files/1/0427/4749/4567/files/tabitamezogewerinor.pdf
    • https://cdn.shopify.com/s/files/1/0431/5712/7336/files/lowes_salina_ks.pdf
    • https://cdn.shopify.com/s/files/1/0428/0070/9791/files/catalogo_de_variedades_de_cafe.pdf
    • https://cdn.shopify.com/s/files/1/0436/7086/4025/files/kevofe.pdf
    • https://cdn.shopify.com/s/files/1/0432/6971/8182/files/54866360889.pdf
    • https://cdn.shopify.com/s/files/1/0432/0428/0481/files/28044273781.pdf
    • https://cdn.shopify.com/s/files/1/0434/2480/9122/files/41617305715.pdf
    • https://cdn.shopify.com/s/files/1/0432/1427/4720/files/dasuzonomu.pdf
    • https://cdn.shopify.com/s/files/1/0434/8379/1517/files/figabamunavizuwaloxozo.pdf
    • https://cdn.shopify.com/s/files/1/0435/1187/3688/files/59451589811.pdf
    • https://cdn.shopify.com/s/files/1/0433/3699/0885/files/1533703037.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/
    • https://cdn.shopify.com/s

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006e8c.bin
dca59fdb93ffacab895edd41e7eca3d53a3bcf694261c0fb96dfb8870784d2ec		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E8C 5280 bytes
font_01_sfnt_off00008095.bin
5201fddc245e676fe1c46a04223ecf25135e995f2b4b7ccaff023a5b6e4e95c6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8095 2052 bytes
font_02_sfnt_off0000894b.bin
482af48045cbde1ef6775e5775feba14f961a8d7663be7977d2109781d6322a7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x894B 10240 bytes
font_03_sfnt_off0000ac03.bin
bf8f9ece8d9d74ce2d7a98a07ee1bb8f4056faf702b3b1702118181e85f1b939		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAC03 16312 bytes

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