Malicious PDF — malware analysis report

Static analysis result for SHA-256 51f47967894f05bf…

MALICIOUS

PDF

68.4 KB Created: 2020-07-31 01:43:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7e0fbcc7b265eb34952c282923b3eb7a SHA-1: 6e5d80939b50df69be0c4589eb83dfc3516a7a89 SHA-256: 51f47967894f05bfcbc4ad6ed7c13e94a64d101157e213b68cd907cca1ac2b4d
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, with many pointing to Shopify domains and others redirecting through a known malicious domain, ttraff.com. The heuristic firings indicate that the PDF is a malicious redirector and a link farm. The document body, though heavily obfuscated, contains text related to 'administrative law pdf noun' and metadata indicating it was generated by wkhtmltopdf, suggesting a lure for users searching for legal documents.

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/pify?keyword=administrative+law+pdf+noun
    • http://files.hyperformancellc.com/uploads/1/3/2/6/132680967/vekakogutuz_xadasojogu.pdf
    • http://files.shoulderandhandclinicisleofwight.com/uploads/1/3/1/3/131382470/2619978.pdf
    • http://files.ombeautysalon.com/uploads/1/3/0/7/130776022/gaxoneru.pdf
    • http://files.shoulderandhandclinicisleofwight.com/uploads/1/3/1/3/13
    • https://cdn.shopify.com/s/files/1/0436/3635/9326/files/70844699500.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mozesuseb.pdf
    • https://cdn.shopify.com/s/files/1/0432/0008/6180/files/59804171072.pdf
    • https://cdn.shopify.com/s/files/1/0433/9482/6396/files/loweto.pdf
    • https://cdn.shopify.com/s/files/1/0433/0936/7461/files/segesip.pdf
    • https://cdn.shopify.com/s/files/1/0433/3764/6245/files/84467111816.pdf
    • https://cdn.shopify.com/s/files/1/0432/8947/7278/files/muxemofi.pdf
    • https://cdn.shopify.com/s/files/1/0428/3393/6547/files/wuriligolonazapotubisik.pdf
    • https://cdn.shopify.com/s/files/1/0438/3539/2150/files/tejuzivekaze.pdf
    • https://cdn.shopify.com/s/files/1/0433/5868/3291/files/75757527872.pdf
    • https://cdn.shopify.com/s/files/1/0432/5598/8374/files/29317245260.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 7

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007474.bin
ec9582a7ce0280a8e4cdcd979f46b547d2e4df6e692e6cfaaf3a6cd74edee066		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7474 4248 bytes
font_01_sfnt_off000083a6.bin
8c34fbacb671cb7de0c5df9dc5ff2b56c3220ac7220e3caff36cad66b5133c11		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83A6 5208 bytes
font_02_sfnt_off0000954f.bin
b83434c667d545e9418ad4c10f9653ccf311d4a942e4dee0ddb7bd24749541a5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x954F 3184 bytes
font_03_sfnt_off0000a1b9.bin
6fef690d0b1ae7015b2c0bd54bc79d21d796c6292557dfb2ed1267c1ea52cd94		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA1B9 5232 bytes
font_04_sfnt_off0000b2c3.bin
78c81b64c630f9b0286c91cab5ffdfb622e66dac30dda00827ce77152f4307d2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB2C3 11252 bytes
font_05_sfnt_off0000d82d.bin
37a3f80bfdc4a1f5a5e6e16d50a20cc9e82cebb17e92febf2588f57896c42002		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD82D 17244 bytes
font_06_sfnt_off0000f1e0.bin
8e5059a4c194d5b0a417d53216fcc4bd17808852519dc79634f47c676a9a1e50		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF1E0 4008 bytes

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