Malicious PDF — malware analysis report

Static analysis result for SHA-256 4dc7d5f11cb01d1d…

MALICIOUS

PDF

46.7 KB Created: 2020-08-20 21:40:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 86060c197fca20699a20e19c138e9d9c SHA-1: 8fe2c128cedfed633d6394d8096c1edb26b4238e SHA-256: 4dc7d5f11cb01d1da38b96a12615849fc4a1dc7eac8c2be8ddd2883bfdd5bc3a
120 Risk Score

Malware Insights

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

The PDF contains a link farm designed to manipulate search engine results, with a primary malicious redirector URL. The document body text, though garbled, contains the same song title used in the malicious URL, suggesting a lure to trick users into clicking. The heuristic firings confirm the presence of malicious redirector links and a link farm within the PDF structure. 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=chogada+tara+chabila+tara+song++pagalworld
    • http://files.packardautorepairs.com/uploads/1/3/1/1/131163740/nugubajaginir-sewaleduli.pdf
    • http://files.mainewest.org/uploads/1/3/1/8/131856358/semevabi.pdf
    • http://files.yummyeatsdesserts.com/uploads/1/3/0/7/130776826/luwesigogixera_pomukaz_viradeletatu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mozesuseb.pdf
    • https://cdn.shopify.com/s/files/1/0440/7122/3446/files/97562912744.pdf
    • https://cdn.shopify.com/s/files/1/0434/2074/5893/files/45997961454.pdf
    • https://cdn.shopify.com/s/files/1/0433/9705/4631/files/saifonline._saif._com_myclaim_documents.pdf
    • https://cdn.shopify.com/s/files/1/0435/9100/8418/files/livawibokagasolet.pdf
    • https://cdn.shopify.com/s/files/1/0432/2285/9944/files/68236419157.pdf
    • https://cdn.shopify.com/s/files/1/0440/7597/4821/files/online_java_editor_formatter.pdf
    • https://cdn.shopify.com/s/files/1/0427/8625/9100/files/sarixu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0097/8853/files/49005790245.pdf
    • https://cdn.shopify.com/s/files/1/0439/5817/3854/files/extract_vmdk_from_ova.pdf
    • https://cdn.shopify.com/s/files/1/0431/9277/8912/files/91945033022.pdf
    • https://cdn.shopify.com/s/files/1/0438/1189/7504/files/rubemamuvopapus.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005df2.bin
5909afcaefdfb9b29f865ef47c142fdf9b044a56216bb4a6786ddeafb8a08d6b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DF2 5472 bytes
font_01_sfnt_off00007095.bin
4f69720e86faf3ffeffd463d17791467fd901ab427b6dd8cd77c07e0e3f0f54f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7095 13980 bytes
font_02_sfnt_off00009d41.bin
72247769042f39f43a8023ed2b3e7bc81224fb89afc25c3ccddd9dded3199151		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9D41 4608 bytes

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