Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3a0e3cee224e93a…

MALICIOUS

PDF

118.0 KB Created: 2020-08-31 10:17:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 662c7bd6dd15164c9a8e62bf4cdc3271 SHA-1: aed9768d81cfbe0c0e92f55e41390b66a019bef9 SHA-256: f3a0e3cee224e93a75367a4934bed815dfe3f4e318f925a67eb52b3651261420
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/wix?keyword=kjendis+s%25C3%25B8sken+look+alikes'. The document body, though heavily obfuscated, appears to contain this same URL. The file also exhibits characteristics of a PDF link farm, suggesting an attempt to distribute malicious links. No scripts were extracted from this sample.

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/wix?keyword=kjendis+s%25C3%25B8sken+look+alikes
    • https://cdn.shopify.com/s/files/1/0431/5689/7947/files/fepamome.pdf
    • https://cdn.shopify.com/s/files/1/0431/2619/4336/files/9354873874.pdf
    • https://cdn.shopify.com/s/files/1/0430/1278/4277/files/tapurik.pdf
    • https://cdn.shopify.com/s/files/1/0431/5355/5624/files/gomagiduzisegunejigezu.pdf
    • https://static.usrfiles.com/ugd/b52961_43194721c17b4bb694c0c9ec90ec47c0.pdf
    • https://static.usrfiles.com/ugd/e32576_1b0c80de4b09420fbfc1a83c7da947a9.pdf
    • https://static.usrfiles.com/ugd/23e9be_9fbe58d4ec3d47d9ba77bb1b0a6e0e4f.pdf
    • https://static.usrfiles.com/ugd/565485_bb686c6c2ba24072ad49722bcf1a0dc5.pdf
    • https://cdn.shopify.com/s/files/1/0434/2480/9116/files/computer_network_administration_and_security_management.pdf
    • https://cdn.shopify.com/s/files/1/0432/0280/5917/files/filadulomukexaxosapafoxe.pdf
    • https://static.usrfiles.com/ugd/b8c837_5ddaf50a542a447f824ea37fce33aca3.pdf
    • https://static.usrfiles.com/ugd/b8c837_c9540df9056c4ca2ac0d3107eba11de8.pdf
    • https://static.usrfiles.com/ugd/ac51ce_7835e7a777484c729998e96198ab336e.pdf
    • https://static.usrfiles.com/ugd/0dd040_1f2c95c3815242fab521702f09750178.pdf
    • https://static.usrfiles.com/ugd/dcfb95_a0138773f1ce4a3a88f446ee84963533.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_off000180d9.bin
7dbd91dc508a6c83655f4b068dcdff88cacc5b41f4789c70a1104fb9b2f368e8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x180D9 4680 bytes
font_01_sfnt_off000190c8.bin
b4ee6197f94c433c49238eb437f09b548800f4bc1ebbaedacc4ec19de7f5b8fe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x190C8 12744 bytes
font_02_sfnt_off0001ba8f.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1BA8F 4324 bytes

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