Malicious PDF — malware analysis report

Static analysis result for SHA-256 35753df437dae3d2…

MALICIOUS

PDF

44.0 KB Created: 2020-09-01 16:21:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 62d238a99f5ac3bd7597aa6eb9144bd2 SHA-1: b3708ac9c5cdcd179a43067fae683f0a382ab791 SHA-256: 35753df437dae3d2a73997fa208d844f34dc1b461731badaf5f1471ea3ff1372
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to Shopify domains, suggesting a link farm for SEO manipulation. One critical heuristic identified a PDF redirector link to 'ttraff.com', which is known malicious infrastructure. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/wix?keyword=california+jurat+with+affiant+statement+form', indicating a lure to a malicious site disguised as a form. 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=california+jurat+with+affiant+statement+form
    • https://cdn.shopify.com/s/files/1/0432/1814/1347/files/73398530606.pdf
    • https://cdn.shopify.com/s/files/1/0432/7417/4632/files/muwuzafuganagefamudu.pdf
    • https://cdn.shopify.com/s/files/1/0434/5122/0134/files/4756815570.pdf
    • https://cdn.shopify.com/s/files/1/0433/7578/8190/files/dolby_digital_live_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/5169/6796/files/adanga_maru_movie_songs_isaimini.pdf
    • https://cdn.shopify.com/s/files/1/0438/9706/1531/files/30138169535.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/79894841610.pdf
    • https://static.usrfiles.com/ugd/565485_86d37b3c646b45f88b3d1d0527e2a7b1.pdf
    • https://static.usrfiles.com/ugd/0a593f_0c27937fbc1b483ea35e04fd6e59f148.pdf
    • https://static.usrfiles.com/ugd/b52961_b19a7f9c80d5470faea149caf3886884.pdf
    • https://cdn.shopify.com/s/files/1/0433/9479/3630/files/41280243730.pdf
    • https://cdn.shopify.com/s/files/1/0440/8279/0552/files/luwogonir.pdf
    • https://cdn.shopify.com/s/files/1/0437/1241/3847/files/gubipapemijikebupovamul.pdf
    • https://cdn.shopify.com/s/files/1/0429/7244/6873/files/27646612195.pdf
    • https://cdn.shopify.com/s/files/1/0436/6322/9078/files/jusinufuxadoburido.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_off00006f88.bin
6df396e69d57049209443c778cafd82bcf1a070a9dd2179ef2836af67a56d780		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F88 5080 bytes
font_01_sfnt_off000080b5.bin
db36973b3ad992d8cb48c7c968855b76346c2caa15e3f50761e8898dfc4700b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x80B5 9884 bytes

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