Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b3ea8a42939df1f…

MALICIOUS

PDF

37.3 KB Created: 2020-09-01 04:15:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8ab9af41875b5aff8e71455be6bc8910 SHA-1: 4a6dbc538c8062a4f0e7dee54660f823bbdbf22e SHA-256: 2b3ea8a42939df1fd4190663cfef91183a39bdcbdd40508577cda05bbd07f2f4
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to the presence of a large number of embedded external links, a technique often used for SEO manipulation or to distribute malicious content. One of these links, 'https://ttraff.cc/wix?keyword=cataldo+weather+report', is flagged as a known malicious redirector. The document body contains garbled text but includes the same URLs found in the heuristics, reinforcing the link farm and redirection findings.

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/wix?keyword=cataldo+weather+report
    • https://cdn.shopify.com/s/files/1/0436/9793/0393/files/lelupotebosogewejogipezat.pdf
    • https://cdn.shopify.com/s/files/1/0429/5553/8591/files/que_es_busqueda_de_informacion_informatica.pdf
    • https://cdn.shopify.com/s/files/1/0429/5114/7679/files/healer_kari_jobe.pdf
    • https://cdn.shopify.com/s/files/1/0434/1579/7917/files/xuzitebelavewadip.pdf
    • https://cdn.shopify.com/s/files/1/0431/0879/4530/files/menadekeje.pdf
    • https://cdn.shopify.com/s/files/1/0438/4640/2198/files/apun_ko_bolte_miya_bhai_song.pdf
    • https://cdn.shopify.com/s/files/1/0437/9885/5837/files/ableton_live_10_manual_espaol.pdf
    • https://static.usrfiles.com/ugd/3ceeb9_b321ca21297a4a39bce1b9c4f7017629.pdf
    • https://static.usrfiles.com/ugd/d9d1f5_fc090a4b83244f0da2902b21f73ccf50.pdf
    • https://static.usrfiles.com/ugd/516574_6a497d4d95404d5cb10ef2cc48b9c737.pdf
    • https://static.usrfiles.com/ugd/b8c837_6844e141f53147ce950f57f484653668.pdf
    • https://static.usrfiles.com/ugd/04e6f9_68c255afe26142c199f38702726d8f37.pdf
    • https://static.usrfiles.com/ugd/122077_8bb60e3fda3c407898fd874ba92ebf16.pdf
    • https://static.usrfiles.com/ugd/739437_449392db360540d4a67ab24c0d7d3112.pdf
    • https://static.usrfiles.com/ugd/50c35f_a38ebec2613c4b1bac46f234720a5b7b.pdf
    • https://static.usrfiles.com/ugd/fbccce_13b1bb9cb3104d33810753b3599f3e48.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_off00005626.bin
10f9464946c008be60910eec76f7197f4fab4afd3a5d65400145ca595d46e58d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5626 4868 bytes
font_01_sfnt_off000066b0.bin
1ff17489359678fb684b2728d9efe668abd40cb7db4e38a0d538ae5dd7c06285		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66B0 9936 bytes

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