Malicious PDF — malware analysis report

Static analysis result for SHA-256 4dcff704ef19169c…

MALICIOUS

PDF

41.9 KB Created: 2020-09-05 12:12:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3c44aabad84c25bd7cda7c87463da3ec SHA-1: 645e22460b6983bb38247240cab1fc1f02a0cc07 SHA-256: 4dcff704ef19169ca469e2a0039c60bec2920dfd03058e03cc32c326ba686000
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, which is also present in the document body. This link, 'https://ttraff.link/wix?keyword=types+of+biomass+energy+sources+pdf', is designed to redirect users to malicious content. The PDF also exhibits characteristics of a link farm, with numerous embedded links, many pointing to Shopify domains, suggesting an attempt to manipulate search engine results or distribute content. The primary intent appears to be luring users to a malicious site via the redirector.

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.link/wix?keyword=types+of+biomass+energy+sources+pdf
    • https://cdn.shopify.com/s/files/1/0435/5257/1555/files/jagonodat.pdf
    • https://cdn.shopify.com/s/files/1/0448/2147/9584/files/beautiful_eyes_images_free.pdf
    • https://cdn.shopify.com/s/files/1/0430/7773/0464/files/37147037046.pdf
    • https://cdn.shopify.com/s/files/1/0435/3556/4949/files/tufurafabavekazinunoka.pdf
    • https://static.usrfiles.com/ugd/4f92c1_f7a0c63874fb4c809e824032567ba8d1.pdf
    • https://static.usrfiles.com/ugd/cf79db_863835ea0342493e9bfe86f17e6e8a29.pdf
    • https://static.usrfiles.com/ugd/0d9a50_9e1e4e09cb5745c5843ede4eca1ec3a6.pdf
    • https://static.usrfiles.com/ugd/0f5b72_cf9cbe00ede74af997c91eb056cf282f.pdf
    • https://static.usrfiles.com/ugd/63f22d_45c1f3afb0c441e89da91de966cdc9d7.pdf
    • https://static.usrfiles.com/ugd/df7b34_eba4b5d68c624e50b2185cd7aceec92e.pdf
    • https://static.usrfiles.com/ugd/6df952_23c6e1a56d934c48aa723171afd7fddf.pdf
    • https://static.usrfiles.com/ugd/0c41e7_e3d8bd40624143c3ad1139cd5e4bc667.pdf
    • https://static.usrfiles.com/ugd/5926b4_6035d3b2d15b4ae48974efab04c8e840.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/
    • https://static.usrfiles.com/ugd/63f

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000064f0.bin
00898eac0dea38f45102dcb8379558484c4bfb0ca7b8e3ca636087f3e3e3571c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64F0 5632 bytes
font_01_sfnt_off000077ff.bin
848673b17882bc20d4c590b1fb639f8f644dab60af53d578ea6b6f235a11e6e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77FF 10096 bytes

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