Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c356a254605f108…

MALICIOUS

PDF

32.9 KB Created: 2020-08-16 19:31:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4d578d054a05aa0cca1651fbe81501d7 SHA-1: 211fdc56a62c8fd5f8df97b56c5cd48b35558eb5 SHA-256: 4c356a254605f108a83d346c15612e6bf7a773f6581bcfec4d121d29ce6a7fed
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one heuristic identifying it as a PDF link farm. The primary malicious URL, 'https://ttraff.com/pify?keyword=cateye+rapid+x3+manual', is flagged as a redirector. The document body, though partially corrupted, contains references to this URL and other Shopify-hosted PDFs, suggesting a lure to external content. The presence of numerous links indicates an attempt to distribute malicious content or phish users.

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.com/pify?keyword=cateye+rapid+x3+manual
    • http://nojutum.ianthompsonceramics.com/uploads/1/3/1/0/131070458/7463283.pdf
    • http://files.suttonhill.com/uploads/1/3/2/7/132740694/e2522daf70d55f3.pdf
    • http://files.danthefan.co.uk/uploads/1/3/1/3/131378918/refira_soxetisij_gumenezo.pdf
    • https://cdn.shopify.com/s/files/1/0431/7318/3643/files/79500006665.pdf
    • https://cdn.shopify.com/s/files/1/0431/0191/3244/files/kategeselaliguzizamidozi.pdf
    • https://cdn.shopify.com/s/files/1/0435/0800/7064/files/concerning_hobbits_guitar.pdf
    • https://cdn.shopify.com/s/files/1/0431/7016/8986/files/taxopupotukedipu.pdf
    • https://cdn.shopify.com/s/files/1/0438/3296/7318/files/proakis_digital_communications_5th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0431/6535/2102/files/emoji_copy_and_paste.pdf
    • https://cdn.shopify.com/s/files/1/0428/0903/2863/files/61084584832.pdf
    • https://cdn.shopify.com/s/files/1/0429/3640/2079/files/zuzipekalatokuvatomo.pdf
    • https://cdn.shopify.com/s/files/1/0434/7474/7545/files/the_birchbark_house_book.pdf
    • https://cdn.shopify.com/s/files/1/0434/0688/5027/files/75112923234.pdf
    • https://cdn.shopify.com/s/files/1/0429/0245/4428/files/92417951965.pdf
    • https://cdn.shopify.com/s/files/1/0429/9997/1999/files/murixib.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_off0000444f.bin
adfab111f1b466b3f0f0cfe907a9aa97d65a39d4ef8f589615e41af58a95280e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x444F 5168 bytes
font_01_sfnt_off000055d7.bin
3509efdc57efc102596ee416ae80fde7b5ba9971ca6445b209d6971f194392de		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55D7 9716 bytes

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