Malicious PDF — malware analysis report

Static analysis result for SHA-256 feb0fcdd2e9e8332…

MALICIOUS

PDF

45.3 KB Created: 2020-08-29 00:49:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7e226fa6079745024359b7d1cba60276 SHA-1: ef5ab004615f2be1a340ad710f42a670e8a30890 SHA-256: feb0fcdd2e9e8332cf1fb5582817bcc1c0d7465e2ca7704470b4998817cd0193
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a common tactic for redirecting users to malicious sites. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.ru/wix?keyword=long+range+discrimination+radar'. The document body, though partially corrupted, contains text related to 'long range discrimination radar' and the wkhtmltopdf generator, suggesting a lure to disguise the malicious intent. The presence of a large number of external PDF links further supports the SEO link farm heuristic.

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/wix?keyword=long+range+discrimination+radar
    • https://cdn.shopify.com/s/files/1/0431/8524/2269/files/97284812312.pdf
    • https://cdn.shopify.com/s/files/1/0431/7180/7396/files/95894889746.pdf
    • https://cdn.shopify.com/s/files/1/0427/9166/5830/files/liberalismo_histria.pdf
    • https://cdn.shopify.com/s/files/1/0438/7520/5288/files/tojap.pdf
    • https://cdn.shopify.com/s/files/1/0427/9477/8791/files/tamexinibadogetekiwenam.pdf
    • https://static.usrfiles.com/ugd/b8c837_5e52b149b8db4caea6601ce0d164e053.pdf
    • https://static.usrfiles.com/ugd/b8c837_58cefc3aef284e358fb09f3a1017fe3c.pdf
    • https://static.usrfiles.com/ugd/b8c837_17376b6bd9934ff083e0f0db4aa49056.pdf
    • https://static.usrfiles.com/ugd/b8c837_dcf45b131d3d4d79b208d929330b5bc1.pdf
    • https://cdn.shopify.com/s/files/1/0431/0165/1105/files/ramigej.pdf
    • https://cdn.shopify.com/s/files/1/0438/6576/8096/files/gozinegikesux.pdf
    • https://cdn.shopify.com/s/files/1/0430/3942/4669/files/xomajopatanigodov.pdf
    • https://cdn.shopify.com/s/files/1/0434/0485/3406/files/vector_calculus_books.pdf
    • https://cdn.shopify.com/s/files/1/0436/8692/0347/files/curso_de_violo_em.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_off0000725a.bin
af9e0763f2787b94599fb82a011e2d6166eb86f8d1264cc87971d504fc712755		 pdf-font-stream PDF embedded font (sfnt) at offset 0x725A 5168 bytes
font_01_sfnt_off000083d8.bin
0c95f13ffd5116f9a236a14b2302c4c4f03960de022e9960cb555e01dc1eab3a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83D8 10980 bytes

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