Malicious PDF — malware analysis report

Static analysis result for SHA-256 f59195e4e2425022…

MALICIOUS

PDF

35.9 KB Created: 2020-09-06 00:41:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5acd9832d82ebdff825300bcaa9620cd SHA-1: 0598a32fb39f4470667e679a23f8879e7f7dcf1f SHA-256: f59195e4e2425022a4d3ae2b7b242697e2e293e97c8e4cfee8caaf41a17bd959
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many pointing to Shopify domains hosting other PDFs, which is indicative of a link farm. One critical heuristic identified a link to a known malicious redirector, 'ttraff.me', suggesting an attempt to lead the user to a malicious site. The document body contains text related to 'alpona pics free' and the redirector URL also includes this keyword, indicating a potential lure. The presence of numerous benign-looking PDF links alongside the malicious one suggests an attempt to camouflage the malicious intent.

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.me/pify?keyword=alpona+pics+free
    • https://cdn.shopify.com/s/files/1/0440/4976/0406/files/avast_premier_key.pdf
    • https://cdn.shopify.com/s/files/1/0428/9468/8419/files/business_email_etiquette_free.pdf
    • https://cdn.shopify.com/s/files/1/0428/3318/2886/files/61975879882.pdf
    • https://cdn.shopify.com/s/files/1/0440/2964/0854/files/guposejedat.pdf
    • https://cdn.shopify.com/s/files/1/0431/2412/9952/files/95573982761.pdf
    • https://cdn.shopify.com/s/files/1/0428/7895/9775/files/99950252305.pdf
    • https://cdn.shopify.com/s/files/1/0433/4914/7816/files/fabokozatobitekazi.pdf
    • https://cdn.shopify.com/s/files/1/0451/1930/7929/files/ninepax.pdf
    • https://static.usrfiles.com/ugd/696117_1771e41c8da34fb89fee7272de08b444.pdf
    • https://static.usrfiles.com/ugd/b1277d_e008794e69374d7cb71ab63bc1739164.pdf
    • https://static.usrfiles.com/ugd/f46427_ef50128df2e1403c95ef3080d8c32260.pdf
    • https://static.usrfiles.com/ugd/ed2d23_dccdeae3e4c04270b4a581203f71ba38.pdf
    • https://static.usrfiles.com/ugd/cacfd7_4f583a3143994a5882d1e981f91be639.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_off00004f35.bin
a5f103839dbbfd49ff6b40dabba9307aed0797e94a1f29bc81a9a58b505be074		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4F35 4996 bytes
font_01_sfnt_off00006042.bin
ec1662cf828a25a3dba7a8d9d110a49ab1c530c266544099132b1dee4bc10523		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6042 10696 bytes

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