Malicious PDF — malware analysis report

Static analysis result for SHA-256 f64afcdfb5039fed…

MALICIOUS

PDF

34.5 KB Created: 2020-08-29 21:53:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7c0f6e33f6d239aaa9c9936d9b6c8c9f SHA-1: ef41ad4c87ecb92ca1d324c9dec5e51b42141259 SHA-256: f64afcdfb5039fed0827039be4f89ef8479f9f4ac785dc85fe391d3f2e1944b3
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm designed to appear as legitimate SEO-optimized content. One of the primary links, 'https://ttraff.cc/wix?keyword=eso+kireth%2527s+amazing+plan', is flagged as a malicious redirector. This suggests the document's purpose is to drive traffic to malicious infrastructure through deceptive SEO tactics.

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=eso+kireth%2527s+amazing+plan
    • https://static.usrfiles.com/ugd/b8c837_4f02a680d3bb45d18d5c27075fd2c1aa.pdf
    • https://static.usrfiles.com/ugd/b42fd6_97126eb512724fa498a6f937b0eff376.pdf
    • https://static.usrfiles.com/ugd/b8c837_fcc0cc1e0227497490770403dbc9ede9.pdf
    • https://static.usrfiles.com/ugd/b8c837_de4b68173cf7430ba8f07f3740fed396.pdf
    • https://cdn.shopify.com/s/files/1/0432/2869/2643/files/alarm_chrono_watch_instructions_walm.pdf
    • https://cdn.shopify.com/s/files/1/0434/2893/7880/files/writing_exponential_functions_practice_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0429/2778/4099/files/73547262163.pdf
    • https://cdn.shopify.com/s/files/1/0433/1687/1333/files/school_bus_license_3.pdf
    • https://cdn.shopify.com/s/files/1/0436/9468/6376/files/45766876043.pdf
    • https://cdn.shopify.com/s/files/1/0434/2228/5976/files/95352270802.pdf
    • https://cdn.shopify.com/s/files/1/0436/2331/7662/files/25757386029.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_off000048a9.bin
f1e03d4b4f5f994a8adac485de465e3a86078f28403273620812b4f296360bd4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x48A9 5336 bytes
font_01_sfnt_off00005abf.bin
d22f6756b9f0d47ff34bfed7c4e3dbe6867ecf99a3b1a6013f74a5215e07f4d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5ABF 10240 bytes

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