Malicious PDF — malware analysis report

Static analysis result for SHA-256 b992d5df95394a69…

MALICIOUS

PDF

52.5 KB Created: 2020-09-04 10:40:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6385ff274b2730161b183cab9e70c4b3 SHA-1: fcc31c65dbd63fbb650ee1418b78c5bad605f206 SHA-256: b992d5df95394a69fa214386362db3d2261021feff50802b8bd1eadcf8ebf97d
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.club/wix?keyword=bluedio+bluetooth+headset+driver+windows+7'. This URL is presented in a context that suggests a lure for downloading drivers. The document also contains a PDF link farm heuristic, indicating a large number of external links, with 'https://static.usrfiles.com/ugd/b8c837_80a536615bd64cce9ba8fc579b7dd666.pdf' being one of the first identified. The presence of these elements strongly suggests a phishing or scam attempt.

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.club/wix?keyword=bluedio+bluetooth+headset+driver+windows+7
    • https://static.usrfiles.com/ugd/b8c837_80a536615bd64cce9ba8fc579b7dd666.pdf
    • https://static.usrfiles.com/ugd/cc14e4_5bc9d03ee7e640b7bbfb9a55e6f48098.pdf
    • https://static.usrfiles.com/ugd/a467d2_3df088307354444185be5b6f3cabbd74.pdf
    • https://static.usrfiles.com/ugd/0dd040_5478cb24a7af45548808204616c109bd.pdf
    • https://static.usrfiles.com/ugd/cfa91a_d918cbb4fef44864a179728dc9362efe.pdf
    • https://static.usrfiles.com/ugd/b8c837_9c0e9fdcae2349c7a7723f529029c282.pdf
    • https://static.usrfiles.com/ugd/96768c_563078c876434acf9e4344c2c1a6b2fb.pdf
    • https://static.usrfiles.com/ugd/b8c837_c8c1b7c2300c4639b99ccf2f4fdb7625.pdf
    • https://cdn.shopify.com/s/files/1/0434/0695/0557/files/aws_certified_solutions_architect_professional.pdf
    • https://cdn.shopify.com/s/files/1/0427/5381/8790/files/41661435972.pdf
    • https://cdn.shopify.com/s/files/1/0432/8148/1884/files/rojojimunowizededezex.pdf
    • https://cdn.shopify.com/s/files/1/0434/4253/6598/files/22880397195.pdf
    • https://cdn.shopify.com/s/files/1/0431/5712/7317/files/l_amenagement_du_territoire_ivoirien.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_off00008c20.bin
d4e8f3595a68498da2ade33d367a3d2075916ebbb158a8565dd6935ec67b73d2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C20 5336 bytes
font_01_sfnt_off00009e52.bin
5fe8a42382b082baea78d35f7416c266af549ebc05f287ea7a01000fa55b550f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9E52 12064 bytes

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