Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e907b16e29cd6e1…

MALICIOUS

PDF

42.4 KB Created: 2020-08-31 12:46:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6c097cc17016c146cc29a0b2d7dbe787 SHA-1: 4292857cfdd7dc460ef4481d604611a5f29b4064 SHA-256: 7e907b16e29cd6e160645a12dd1fc0b98c23e589602c8ada20fabc38b1071aac
120 Risk Score

Malware Insights

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

The PDF file contains a mass external link farm, with a primary link pointing to a known malicious redirector. The embedded document body text, though corrupted, contains a URL that appears to be a lure for downloading an application. This suggests the document's purpose is to trick users into visiting a malicious site and downloading malware.

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=whats+up+application+free+download
    • https://static.usrfiles.com/ugd/63d3ad_b7e2c95f5933436d9693faaf03276b18.pdf
    • https://static.usrfiles.com/ugd/b8c837_759d53d6afba4bc0a681aca42b34d0ef.pdf
    • https://static.usrfiles.com/ugd/b8c837_935f39ae9fc64dfdafd45904ef9bd08c.pdf
    • https://static.usrfiles.com/ugd/b8c837_2e7d491488694388b49b5e72010ebf10.pdf
    • https://static.usrfiles.com/ugd/67e251_6b78ef439346458494a7f69af057e876.pdf
    • https://static.usrfiles.com/ugd/b8c837_bab60b6c30cf4dcdba911e67216e2fb4.pdf
    • https://static.usrfiles.com/ugd/b8c837_a38d6fa4cb47484080ed3b800154c22e.pdf
    • https://static.usrfiles.com/ugd/b8c837_7e25e3486ca94c258ba1421874a4e8f6.pdf
    • https://static.usrfiles.com/ugd/921909_63872897915448c6bc849c0a2e67fcbc.pdf
    • https://static.usrfiles.com/ugd/69695d_71ccd360a541404eaf512d4907e97e75.pdf
    • https://static.usrfiles.com/ugd/60933b_c8c5250ae96a431eb7f5e33059181134.pdf
    • https://static.usrfiles.com/ugd/db93e9_350521e06fff45258b4809bc8840f32f.pdf
    • https://static.usrfiles.com/ugd/0779a3_00c187e3aad9407e9f7c0155fd558d3f.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_off00006726.bin
292f4eeb9a430a4a454ae43001e0f8d560f18fde8e0fff859107133696284836		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6726 5348 bytes
font_01_sfnt_off0000796d.bin
7257a98891e125b84624f6d548d1b6206810e3896833bd20173eb6749211cafd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x796D 10452 bytes

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