Malicious PDF — malware analysis report

Static analysis result for SHA-256 293c7a5d6447e41b…

MALICIOUS

PDF

38.4 KB Created: 2020-07-29 16:11:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 53b521e1b5f19b5d18ca18947661367c SHA-1: 2d78f9c89b613ddf811da1ad20fbe28b589b9c0e SHA-256: 293c7a5d6447e41b3679ee3f8ec4a0571cefc982bb573cd25dbe819ef97fbe0f
120 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a free PDF download. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK indicates the primary URL leads to known malicious infrastructure. The PDF_SEO_LINK_FARM heuristic suggests the document is part of a larger link farm designed to manipulate search engine results and drive traffic to malicious sites. The embedded URL is the primary vector for this attack.

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=blockchain+revolution+tapscott+free+pdf
    • http://files.acupuncture4pets.ca/uploads/1/3/1/8/131856186/05a895c47.pdf
    • http://files.serpiltuti.com/uploads/1/3/0/7/130776073/6652427.pdf
    • http://files.smoketine.com/uploads/1/3/1/8/131859370/xepasojadigu.pdf
    • https://cdn.shopify.com/s/files/1/0433/9823/4270/files/72489026857.pdf
    • https://cdn.shopify.com/s/files/1/0430/6268/9946/files/53758014983.pdf
    • https://cdn.shopify.com/s/files/1/0434/4017/7308/files/lebikidixur.pdf
    • https://cdn.shopify.com/s/files/1/0427/4615/1078/files/59945652894.pdf
    • https://cdn.shopify.com/s/files/1/0432/6585/1542/files/81649023377.pdf
    • https://cdn.shopify.com/s/files/1/0428/2250/0518/files/nodadowezofu.pdf
    • https://cdn.shopify.com/s/files/1/0428/3262/5831/files/53383264341.pdf
    • https://cdn.shopify.com/s/files/1/0434/0360/8216/files/52641972776.pdf
    • https://cdn.shopify.com/s/files/1/0432/2977/3982/files/fetudim.pdf
    • https://cdn.shopify.com/s/files/1/0428/5464/5916/files/molofomolowo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vabagibad.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_off00005892.bin
3c555dc98f588b2f2372c230a5d07b257703763fbff4ef1b0dd090d689cd6314		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5892 5300 bytes
font_01_sfnt_off00006a81.bin
ce764e8c38facfddcf3a8d72ffc1fc1213a655b65d02d27cae16935479e76262		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A81 10576 bytes

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