Malicious PDF — malware analysis report

Static analysis result for SHA-256 dde626149d6ba8c0…

MALICIOUS

PDF

35.9 KB Created: 2020-08-29 18:37:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 52e9f4d8816b4f32738deeb02b4ecda3 SHA-1: b9244423b4f0ee0e8a3d99fe32dbab412ed257cb SHA-256: dde626149d6ba8c05ec453c2e61d1b49b5d2f20a813fec93d1161a95297718a1
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/wix?keyword=nazi+zombie+custom+maps'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, one of which is 'https://static.usrfiles.com/ugd/b8c837_c0812bb7e82e41c58e9700235dc98bac.pdf'. The presence of a visual download button lure further supports a malicious workflow.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=nazi+zombie+custom+maps
    • https://static.usrfiles.com/ugd/b8c837_c0812bb7e82e41c58e9700235dc98bac.pdf
    • https://static.usrfiles.com/ugd/b8c837_d9df642da5774e1194a80f0934fb8a8b.pdf
    • https://static.usrfiles.com/ugd/b8c837_8801ef0e5bec44738a311b88c4222d24.pdf
    • https://static.usrfiles.com/ugd/b8c837_81b48788db024d088584af02255238f5.pdf
    • https://static.usrfiles.com/ugd/8b9728_1b0d80dc5f584f78a0d395ff58e9e836.pdf
    • https://cdn.shopify.com/s/files/1/0440/0798/1214/files/purotunoganer.pdf
    • https://cdn.shopify.com/s/files/1/0431/3835/1255/files/basic_computer_skills_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0437/1798/4405/files/femova.pdf
    • https://cdn.shopify.com/s/files/1/0440/4091/3061/files/4681068968.pdf
    • https://cdn.shopify.com/s/files/1/0433/1343/0686/files/95691992017.pdf
    • https://static.usrfiles.com/ugd/b8c837_749827de5268404b836fd0d1bf8d7952.pdf
    • https://static.usrfiles.com/ugd/5ad03d_49549933802c48db858cc4f0cfc7a022.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_off000050d8.bin
df28aae540dac792cdec444548a3eb660c805dc21ba9a58d6938f7dcb956d4c0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x50D8 5108 bytes
font_01_sfnt_off00006233.bin
b31585cc736ac1e80e01b97b20b9c6df9005d90548a8d7401b39c634a7943d8c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6233 9684 bytes

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