Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9eb9720c125c92d…

MALICIOUS

PDF

34.2 KB Created: 2020-08-29 17:14:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 59e2dbcab15fe7c5213f974a903e3550 SHA-1: 597bfe38fa93e0adc3b1bef67ee7936d37c06fef SHA-256: d9eb9720c125c92d2079e2b79ba24c66dd17399902117897822829a1b19f8a52
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing indicating it links to a known malicious redirector. The document body, though heavily obfuscated, contains the same URL found in the heuristic. The presence of numerous embedded links, many pointing to Shopify domains, suggests an attempt to disguise malicious content within a seemingly legitimate structure, likely for SEO poisoning or to host further malicious content. The primary malicious URL is ttraff.ru, which is flagged as a malicious redirector.

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=poweroll+top-o-matic+electric+cigarette+rolling+maker+machine
    • https://cdn.shopify.com/s/files/1/0433/9938/1157/files/popitenojogurorupuwogafa.pdf
    • https://cdn.shopify.com/s/files/1/0431/9569/5266/files/wamulasitalafiruvojunos.pdf
    • https://cdn.shopify.com/s/files/1/0434/6803/0102/files/hindu_gods_ks2_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0435/3336/9503/files/tajujanosalur.pdf
    • https://cdn.shopify.com/s/files/1/0437/7870/3521/files/ssc_marksheet_download_maharashtra.pdf
    • https://static.usrfiles.com/ugd/dfb5f8_ca7defbd3c2f42bea9e33ad054d0e160.pdf
    • https://static.usrfiles.com/ugd/b8c837_37699ed67b604364ac23f41f386d8115.pdf
    • https://static.usrfiles.com/ugd/77941b_300f2d0c9cc24b77b6d66d4112358b47.pdf
    • https://static.usrfiles.com/ugd/b8c837_893d72eb114d4d849105a7c9b5dcabce.pdf
    • https://cdn.shopify.com/s/files/1/0431/8094/9658/files/akuntansi_syariah_di_indonesia.pdf
    • https://cdn.shopify.com/s/files/1/0429/2100/1119/files/liwesaridagap.pdf
    • https://cdn.shopify.com/s/files/1/0430/9362/2935/files/xigebuzuwi.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_off000047ba.bin
14a39d16095623e600c0a15130623f38b89820c99ffd5be1897e370962ad147d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x47BA 5356 bytes
font_01_sfnt_off000059dd.bin
0a9737c970247ae7d12b225b6d05ec6cd75cbb5899f64010d16bc482e4dceeac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59DD 9840 bytes

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