Malicious PDF — malware analysis report

Static analysis result for SHA-256 21bee29229aa20f6…

MALICIOUS

PDF

44.7 KB Created: 2020-08-19 02:49:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 894b5bf4e3c21930c8212f2dac8113a7 SHA-1: 878d8843b3462d6f3bbd4667bcc1f63bc53d0975 SHA-256: 21bee29229aa20f621fe2f4e94a0ecc52e81744e93383bdf9ece47f14199c589
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/pify?keyword=fatalism+definition+pdf'. This URL is embedded within the document body, disguised as a definition of fatalism. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify. The primary malicious URL is likely intended to redirect the user to a further malicious destination.

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=fatalism+definition+pdf
    • http://files.jaeeunpark.studio/uploads/1/3/2/6/132682040/femume.pdf
    • http://files.luluanthistle.com/uploads/1/3/1/8/131856195/9171686.pdf
    • http://files.leosfromthelionsden.com/uploads/1/3/0/9/130968985/2446515.pdf
    • https://cdn.shopify.com/s/files/1/0432/9078/8000/files/vipefivokuvim.pdf
    • https://cdn.shopify.com/s/files/1/0432/2797/1741/files/angulos_inscritos_y_semiinscritos_en_una_circunferencia_ejercicios.pdf
    • https://cdn.shopify.com/s/files/1/0427/8904/4383/files/83001691896.pdf
    • https://cdn.shopify.com/s/files/1/0436/2695/4905/files/hypercom_t4220_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/3373/9932/files/free_video_advertising_templates.pdf
    • https://cdn.shopify.com/s/files/1/0429/6241/9863/files/tomewudo.pdf
    • https://cdn.shopify.com/s/files/1/0430/4168/5665/files/zaruvizevasi.pdf
    • https://cdn.shopify.com/s/files/1/0430/3713/0914/files/99733336026.pdf
    • https://cdn.shopify.com/s/files/1/0432/3583/6072/files/wapuzezukidabanutoliz.pdf
    • https://cdn.shopify.com/s/files/1/0436/5195/6894/files/70795702633.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_off00006143.bin
93e485334cd124e6d6b0e9a79214265c1170a08384ceefeb5c0c2f60ab38b36a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6143 4832 bytes
font_01_sfnt_off0000719b.bin
850fe0bab8b632509beae6b84c5414c96fb70127b11e028af692f6c70ea0a5e9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x719B 10888 bytes
font_02_sfnt_off000096b4.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x96B4 4324 bytes

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