Malicious PDF — malware analysis report

Static analysis result for SHA-256 d00700f9a016d0c0…

MALICIOUS

PDF

39.9 KB Created: 2020-08-25 16:58:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5de8f21b74b34e7e22b062359afbf8b3 SHA-1: ca589b50ef557f89ccc123a72db24b7437bd17df SHA-256: d00700f9a016d0c0c0cb2b8a647781c827acf8af0f8fdd09e51718d9da21352e
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with a critical heuristic firing for a PDF link farm. One of these links, 'https://ttraff.cc/pify?keyword=hello+bixby+apk+for+oreo', is identified as a malicious redirector. The document body contains garbled text but includes the same malicious URL, suggesting the document's primary purpose is to redirect users to potentially harmful content through a link farm.

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.cc/pify?keyword=hello+bixby+apk+for+oreo
    • http://files.friskypress.com/uploads/1/3/2/7/132740462/sitijizef_nurusubizi_vubesemafe_binubir.pdf
    • http://files.coolvintagefinds.com/uploads/1/3/0/7/130738769/15cd69c.pdf
    • http://files.carescoasters.com/uploads/1/3/1/8/131871977/8329494.pdf
    • http://files.reneguerinart.com/uploads/1/3/1/3/131380847/4099474.pdf
    • https://cdn.shopify.com/s/files/1/0435/1049/7434/files/sw_kotor_mod.pdf
    • https://cdn.shopify.com/s/files/1/0427/4031/8375/files/parasasadubanitatuvisizev.pdf
    • https://cdn.shopify.com/s/files/1/0431/4251/2802/files/30873804341.pdf
    • https://cdn.shopify.com/s/files/1/0431/6531/9324/files/caribbean_cuisine_cookbook.pdf
    • https://cdn.shopify.com/s/files/1/0431/1498/7669/files/fejukaloponimab.pdf
    • https://cdn.shopify.com/s/files/1/0437/2345/6666/files/bauman_capitalismo_parasitrio.pdf
    • https://cdn.shopify.com/s/files/1/0435/2271/9912/files/imo_messenger_app_android_free.pdf
    • https://cdn.shopify.com/s/files/1/0462/9485/9936/files/analysys_mason_5g.pdf
    • https://cdn.shopify.com/s/files/1/0438/6645/6224/files/kodigovonevuzajorelava.pdf
    • https://cdn.shopify.com/s/files/1/0431/9812/0096/files/21059635632.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_off00005f15.bin
73d195ec1dfbfa0c4ca4c3ff8e48ebb662733a435659bf0f408775ba38fc9bd2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F15 5052 bytes
font_01_sfnt_off00007059.bin
b3a9e4ebef226fbf3010d525d857616c36e6dc205bd8d012ec4726e76042bc3f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7059 10128 bytes

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