Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb600fe9b0bf4f34…

MALICIOUS

PDF

48.0 KB Created: 2020-08-31 01:15:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5447c44c84b6a798cde5950143558579 SHA-1: 0207a172e43973bbae4ae32bd77b8116dcfcb553 SHA-256: cb600fe9b0bf4f34e32ff9203ef9ca3f455556f3fb450dae5bfcc3e75c7c08c4
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it directs users to a known malicious URL. Additionally, PDF_SEO_LINK_FARM suggests a large number of outbound links, many pointing to Shopify, likely for SEO manipulation or to host further malicious content. The document body, though heavily obfuscated, contains the malicious URL and a benign-looking title, supporting a lure-based attack pattern.

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.link/wix?keyword=coordinate+plane+worksheets+6th+grad
    • https://cdn.shopify.com/s/files/1/0431/1423/4016/files/fijidesogasegezolizesoto.pdf
    • https://cdn.shopify.com/s/files/1/0439/1780/3675/files/32425195623.pdf
    • https://cdn.shopify.com/s/files/1/0432/9861/9557/files/winijosita.pdf
    • https://cdn.shopify.com/s/files/1/0435/1882/0511/files/90729208818.pdf
    • https://cdn.shopify.com/s/files/1/0427/9477/8791/files/gupunekokoratiwoveranu.pdf
    • https://cdn.shopify.com/s/files/1/0436/1011/2163/files/barron_s_gre_word_list_with_pictures.pdf
    • https://cdn.shopify.com/s/files/1/0428/2492/5347/files/tesulorora.pdf
    • https://cdn.shopify.com/s/files/1/0431/6862/8892/files/13060813531.pdf
    • https://cdn.shopify.com/s/files/1/0430/4093/1991/files/66369298291.pdf
    • https://cdn.shopify.com/s/files/1/0445/7899/6383/files/39839260838.pdf
    • https://cdn.shopify.com/s/files/1/0428/8321/9619/files/55872361967.pdf
    • https://static.usrfiles.com/ugd/b8c837_e5d9d772ef3049d38fbfb0259d316877.pdf
    • https://static.usrfiles.com/ugd/7c3584_00ff5aced4a142f3a136720314fc7213.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/
    • https://cdn.shopify.com/s/files/1/0445/7899/6383

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006fcf.bin
33aa317357115ada255580b302af24f6125e1374424cce32b397180c256ff77c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FCF 5340 bytes
font_01_sfnt_off00008205.bin
8fff24a21042f1df4486ddf30faf0adc47f25a1ec3f24c0b146eb320e4da1b48		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8205 10240 bytes
font_02_sfnt_off0000a4c1.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA4C1 4324 bytes

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