Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca859cbd55abbc4a…

MALICIOUS

PDF

35.3 KB Created: 2020-08-30 01:43:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 529478355f11773324d08607b034701c SHA-1: 2d531423b2d519440134092fb0e68a51f9169ab8 SHA-256: ca859cbd55abbc4acc5bbdbdb48697c1cc78e9cd6a25e45f2187116a2fee8643
120 Risk Score

Malware Insights

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

The PDF contains a link farm designed to lure users to a malicious redirector. The primary malicious URL is https://ttraff.com/wix?keyword=dell+optiplex+7010+ebay, which is likely part of a phishing or scam campaign. The document body, though heavily obfuscated, contains references to the same lure. 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=dell+optiplex+7010+ebay
    • https://static.usrfiles.com/ugd/d5cf39_426491fdf48f46549087182c1b4ca17b.pdf
    • https://static.usrfiles.com/ugd/3bca44_403e7f5b530749d4bfb5f2cf58bb13b5.pdf
    • https://static.usrfiles.com/ugd/e745be_2c1a74fcf8734e94aa8367f6e1541d65.pdf
    • https://static.usrfiles.com/ugd/a382ee_b24f4f75c47b477e9ef531dc336019e6.pdf
    • https://static.usrfiles.com/ugd/b8c837_3b7edc73100e460e9aca7af4d516351d.pdf
    • https://static.usrfiles.com/ugd/6cfc61_205b07d479814691a4ad109f7acbafdb.pdf
    • https://static.usrfiles.com/ugd/b8c837_4a8e8b88ce3f42ecaa4fc7149577fd9a.pdf
    • https://static.usrfiles.com/ugd/9cc572_fbd592a2aefb4c109392f2c489ceecb4.pdf
    • https://static.usrfiles.com/ugd/b8c837_cbc3ed3688bd4e81b20d5ed8562a561f.pdf
    • https://cdn.shopify.com/s/files/1/0433/9240/1558/files/zojokoludixos.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/32878299647.pdf
    • https://static.usrfiles.com/ugd/b8c837_93d65f0bb7244ba693c62d5be9983a4c.pdf
    • https://static.usrfiles.com/ugd/b8c837_ccc439a2100c48c19df5f15514c9e0f9.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_off00004c43.bin
2461b57d767b078b6f536f410df656e0fbab202b356bb85b143a8f08da16fce9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4C43 5120 bytes
font_01_sfnt_off00005dda.bin
bf018928a216c5420303263375e2ad8587b0ef0b4510f8a4247adfc92d89ab43		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DDA 10236 bytes

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