Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3d321de863286ac…

MALICIOUS

PDF

41.6 KB Created: 2020-08-30 14:15:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 57cd75f979069347922b35b4cd26f632 SHA-1: 8d68ff95a795e989bd2bbdc170969b90c5da8f46 SHA-256: b3d321de863286aca40a5c420316a97fe7393317c277d12f93a2c3350293ce99
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector. The document body, though partially corrupted, contains text related to 'scripture chapters' and the primary malicious URL. The presence of a mass of external PDF links suggests an attempt to manipulate search engine results or to distribute malicious content through a seemingly benign link farm.

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=surprised+by+scripture+chapters
    • https://cdn.shopify.com/s/files/1/0436/9511/2347/files/12743830093.pdf
    • https://cdn.shopify.com/s/files/1/0453/3174/2875/files/85584615260.pdf
    • https://cdn.shopify.com/s/files/1/0433/6104/2591/files/19655915674.pdf
    • https://static.usrfiles.com/ugd/d01287_5a0e087e1f734d239f9b6f30606bbb80.pdf
    • https://static.usrfiles.com/ugd/b8c837_0c66bee8f36240ab9f0693405fe6d8ca.pdf
    • https://static.usrfiles.com/ugd/1849a1_271f2eeafee64c649c8c140f80cb3663.pdf
    • https://static.usrfiles.com/ugd/b8c837_458f48793b4545df8b1088134a520bba.pdf
    • https://static.usrfiles.com/ugd/43d598_cfc752b6a02248839fca751f15dd3264.pdf
    • https://static.usrfiles.com/ugd/432b07_b4c048981b76448e849b9740e6fade4c.pdf
    • https://static.usrfiles.com/ugd/b8c837_704e379a2a26416eabe240f17ddfaf37.pdf
    • https://static.usrfiles.com/ugd/defcb2_ea0251b680a54dd4b314714e84070635.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_off0000647b.bin
d2df36a5387731729baa052505750b721d4d36cc6bebbc95a4b2854e4d1a9cb2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x647B 5472 bytes
font_01_sfnt_off00007709.bin
4e32206f4ad782a48f30308ae6d33171cfc2fe43f5aff03afa10dcaf5eda57d1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7709 10120 bytes

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