Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ef6c66d52444b37…

MALICIOUS

PDF

40.0 KB Created: 2020-09-01 18:34:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8b8f24eb99f203bf212fa168e70a196f SHA-1: 52f396665ac1486bf9c6f8da1aab96bbd931665d SHA-256: 2ef6c66d52444b37748951d800d936523f42b52ded118cdaf859f64fe7487f9e
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a PDF link farm. One of these links, 'https://ttraff.ru/pify?keyword=burnin+up+jonas+brothers', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains references to this URL and other PDF links hosted on Shopify and static.usrfiles.com. This suggests a coordinated effort to direct users to malicious infrastructure, likely for phishing or malware distribution.

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=burnin+up+jonas+brothers
    • https://cdn.shopify.com/s/files/1/0437/4088/9240/files/gixugitimasog.pdf
    • https://cdn.shopify.com/s/files/1/0428/5179/5107/files/zawujogopotebogafelirid.pdf
    • https://cdn.shopify.com/s/files/1/0461/6545/9096/files/91240337241.pdf
    • https://cdn.shopify.com/s/files/1/0432/4563/3699/files/wanudev.pdf
    • https://static.usrfiles.com/ugd/12dc78_975b28526269444f88f78317baebe5ad.pdf
    • https://static.usrfiles.com/ugd/32acb1_0d8b26cee10947409a3e6b64713099f2.pdf
    • https://static.usrfiles.com/ugd/516793_f6479f50c2554de384630e4dbc2bda05.pdf
    • https://static.usrfiles.com/ugd/865d50_9a609f78112e4f398d16ec66a712c593.pdf
    • https://static.usrfiles.com/ugd/b8c837_cd37b76d2ec74490b5eea5eed756c6b8.pdf
    • https://static.usrfiles.com/ugd/b8c837_0dacff84051347828630362e22c5b731.pdf
    • https://static.usrfiles.com/ugd/b8c837_7963a5d28ff3418eb938050d1d49058c.pdf
    • https://cdn.shopify.com/s/files/1/0429/1854/3523/files/gujuvenaxigadulaf.pdf
    • https://cdn.shopify.com/s/files/1/0449/9360/9896/files/cumulative_density_function_of_uniform_distribution.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_off00005e60.bin
5035154cd7c3a92c5ba9c075252747bd30e2ab9c70b74df9eda01b459e4773ba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E60 5140 bytes
font_01_sfnt_off00006fce.bin
dc7114e6049846f448a0ba3cbf1fff13ef160fa6691def840ea04a0d2cf70af0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FCE 10412 bytes

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