Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d504cc2e53b4383…

MALICIOUS

PDF

39.7 KB Created: 2020-08-31 05:51:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 572407a5db8d97a89c4afe0f09486834 SHA-1: 7c368d07d98217ac61dd78a4d8f824d4445deaff SHA-256: 7d504cc2e53b43835c7fae14fb617ada26da7da9a4a6131a5850eb2660bb80a9
120 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, embedding numerous URLs, with a critical heuristic firing indicating a malicious redirector link. The document body contains the primary malicious URL and references to other PDF files hosted on Shopify. This suggests an attempt to lure users to malicious content or spam pages.

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/wix?keyword=fretebras+caarapo+ms
    • https://cdn.shopify.com/s/files/1/0432/5549/6866/files/pratidin_newspaper_bengali.pdf
    • https://cdn.shopify.com/s/files/1/0431/8520/9512/files/baxozedekutetubemo.pdf
    • https://cdn.shopify.com/s/files/1/0430/3152/7575/files/r_vs_r_studio.pdf
    • https://cdn.shopify.com/s/files/1/0437/5799/4138/files/57861467619.pdf
    • https://cdn.shopify.com/s/files/1/0432/9691/5616/files/rilotemudik.pdf
    • https://cdn.shopify.com/s/files/1/0428/5153/2963/files/92760535085.pdf
    • https://cdn.shopify.com/s/files/1/0435/1547/8176/files/napevutaje.pdf
    • https://cdn.shopify.com/s/files/1/0432/6083/8050/files/21821422723.pdf
    • https://static.usrfiles.com/ugd/4cf28d_3549e06ec86d4d3b9ef8479e9621ee4b.pdf
    • https://static.usrfiles.com/ugd/b56239_0203e63e6f4e40ddb52ff54073e0c828.pdf
    • https://static.usrfiles.com/ugd/38bf1f_fbd4e24c1ef5455fbab4d7609807bc03.pdf
    • https://static.usrfiles.com/ugd/69695d_504251902a3b4a0fac8d3cb533549e2e.pdf
    • https://static.usrfiles.com/ugd/a771bd_8c52fb9a79f74241aebed5c5da7e5d67.pdf
    • https://cdn.shopify.com/s/files/1/0433/2208/1448/files/zikuxixodepi.pdf
    • https://cdn.shopify.com/s/files/1/0435/6974/1983/files/55950499373.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/72707516801.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_off00005031.bin
a65008472fc6f7e8825b6a94ab5aca73ca2552b598aa043c5ae8fe74b09a4248		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5031 4776 bytes
font_01_sfnt_off0000605d.bin
e77f70f217d590b5b99224ac46964b84957d097e56d7d5a7b75b1a6e64691ecf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x605D 10408 bytes
font_02_sfnt_off00008411.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8411 4324 bytes

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