Malicious PDF — malware analysis report

Static analysis result for SHA-256 4889de85180200b4…

MALICIOUS

PDF

40.3 KB Created: 2020-08-09 11:09:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 444ec858000f13999ba87adde7454e54 SHA-1: 28233b99ab5a6d067ef39f39ddfdea9219b6e606 SHA-256: 4889de85180200b47be8d30542e1e0f9b61e541680798e322ac00e0cf5776df9
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains the URL that triggers the malicious redirector. This suggests the PDF is designed to lead users to malicious content through a link farm and a primary malicious URL.

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/pify?keyword=exercicios+gimnospermas+e+angiospermas+pdf
    • http://files.oakparkfriends.org/uploads/1/3/1/8/131855992/f5850fe3c233b48.pdf
    • http://jajogi.higherheightsyouth.org/uploads/1/3/2/6/132683014/252c40c4f50.pdf
    • http://files.tatancahealth.com/uploads/1/3/1/6/131606121/suvekurogozine_jeraxarenok_fozapila_vuviginimi.pdf
    • https://cdn.shopify.com/s/files/1/0431/6053/5196/files/97108884403.pdf
    • https://cdn.shopify.com/s/files/1/0438/9981/4040/files/atlas_de_microbiologia_veterinaria.pdf
    • https://cdn.shopify.com/s/files/1/0434/0688/5027/files/james_patterson_books_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/8695/4140/files/muluguzelo.pdf
    • https://cdn.shopify.com/s/files/1/0437/0278/0057/files/criminal_law_book_2_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/1883/8435/files/52855235144.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/44219577828.pdf
    • https://cdn.shopify.com/s/files/1/0431/2019/7789/files/psoriasis_vulgaris.pdf
    • https://cdn.shopify.com/s/files/1/0434/2831/5288/files/alt_code.pdf
    • https://cdn.shopify.com/s/files/1/0439/7914/5374/files/vifixomojexanali.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_off000060ca.bin
991d99d9d0c7772b482463db7295750e1fb5d9320f86300486de407715290d75		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60CA 5468 bytes
font_01_sfnt_off00007359.bin
ab6019c64fe29a5b72ebf2f3c761abf2e9205a90d48b7f94e5c58400257b4c16		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7359 9728 bytes

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