Malicious PDF — malware analysis report

Static analysis result for SHA-256 41dd2b6f32d9d86f…

MALICIOUS

PDF

49.6 KB Created: 2020-08-02 18:05:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6df9e9b44b3994d905c92dfc4944d83d SHA-1: f2aed0cf61b21775f082814464dde5617d4a04f2 SHA-256: 41dd2b6f32d9d86fbff0ff8cafe273b8bc2390816a14ac7257496de9a77c3077
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, with one identified as a malicious redirector. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' indicates that the link 'https://ttraff.ru/pify?keyword=demonomicon+4e+pdf' points to known malicious infrastructure. Additionally, the 'PDF_SEO_LINK_FARM' heuristic suggests the document is designed to host a large number of external links, likely for SEO manipulation or to distribute further malicious content. 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/pify?keyword=demonomicon+4e+pdf
    • http://files.24diva.com/uploads/1/3/1/8/131872055/f77465c72ab6c.pdf
    • http://files.phoenix-aura.com/uploads/1/3/1/4/131406036/cbae59127fec250.pdf
    • http://files.meowmeowpowpowlit.com/uploads/1/3/2/7/132740845/761880.pdf
    • https://cdn.shopify.com/s/files/1/0437/8555/2030/files/dazubulijedibopidedazaz.pdf
    • https://cdn.shopify.com/s/files/1/0433/8958/3514/files/11634820743.pdf
    • https://cdn.shopify.com/s/files/1/0434/5567/6568/files/fazinabexoti.pdf
    • https://cdn.shopify.com/s/files/1/0434/1399/5672/files/nemibemokewizejikib.pdf
    • https://cdn.shopify.com/s/files/1/0430/7258/5881/files/84764602131.pdf
    • https://cdn.shopify.com/s/files/1/0427/9877/6487/files/78799726553.pdf
    • https://cdn.shopify.com/s/files/1/0433/4839/4142/files/89508414890.pdf
    • https://cdn.shopify.com/s/files/1/0428/8725/0087/files/65082487408.pdf
    • https://cdn.shopify.com/s/files/1/0432/0234/7168/files/13648844188.pdf
    • https://cdn.shopify.com/s/files/1/0431/5850/3584/files/54905505943.pdf
    • https://cdn.shopify.com/s/files/1/0430/8484/1124/files/pakaw.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_off0000860e.bin
254529e4d41dabf8a578327c9f00e6a629646bccebc6d22cd501768be392a007		 pdf-font-stream PDF embedded font (sfnt) at offset 0x860E 4872 bytes
font_01_sfnt_off000096a5.bin
206d5c01fd23d5cb0c00eaa2cd912eb36aeb593ff6a54132f490b5841f54fc64		 pdf-font-stream PDF embedded font (sfnt) at offset 0x96A5 10328 bytes

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