Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f58d9e753c2e0d6…

MALICIOUS

PDF

43.3 KB Created: 2020-08-29 23:47:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 42b44fb031f207c0e7b96ea87bd237e8 SHA-1: e442f0234ab2275054464f46a6d7f6a41a90d82e SHA-256: 9f58d9e753c2e0d69ef96d43a2656ee87c4c031a252821a21102d1eaa4f35f25
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, characteristic of a link farm. One of these links, 'https://ttraff.ru/wix?keyword=martin+luther+the+jews+and+their+lie', is flagged as pointing to known malicious redirector infrastructure. The document body, though heavily obfuscated, also contains this URL, suggesting it is the primary lure. The presence of numerous other PDF links, many hosted on Shopify and static.usrfiles.com, indicates a coordinated effort to distribute content or traffic through these means.

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.ru/wix?keyword=martin+luther+the+jews+and+their+lie
    • https://cdn.shopify.com/s/files/1/0430/9912/7957/files/88817279788.pdf
    • https://cdn.shopify.com/s/files/1/0457/6401/8332/files/starbucks_barista_quattro_manual.pdf
    • https://cdn.shopify.com/s/files/1/0434/2834/8056/files/beginning_xml_with_c_7_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/6245/1611/files/wubadugax.pdf
    • https://cdn.shopify.com/s/files/1/0429/4321/7830/files/65475240523.pdf
    • https://cdn.shopify.com/s/files/1/0431/8937/1040/files/garipameb.pdf
    • https://static.usrfiles.com/ugd/80c1db_f98791702493450bb0663605a50ac0f5.pdf
    • https://static.usrfiles.com/ugd/b8c837_76409856b9294693a9f06cf6e0a0edd5.pdf
    • https://static.usrfiles.com/ugd/b8c837_8e04610e10ff46a4b195ffd7d0581162.pdf
    • https://static.usrfiles.com/ugd/a467d2_c7195c0850f342ba8fd044a0acd4f637.pdf
    • https://static.usrfiles.com/ugd/b8c837_3382137978224093a2596f2a0e44a9c1.pdf
    • https://static.usrfiles.com/ugd/b8c837_1424bd56622a4d56a1e2ca8feeba0a69.pdf
    • https://static.usrfiles.com/ugd/b8c837_53b9671c08e244d49280a3d4cf1be3ab.pdf
    • https://static.usrfiles.com/ugd/b8c837_4256e1a6ffbf4d08a811cea1e5adb1dc.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006038.bin
3fb49fb76677a228a9c04573b845131c06bae72479e0ee9ceda2abe1153e1ea2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6038 4860 bytes
font_01_sfnt_off000070b1.bin
4f9df9106d6ed36eb30834cffb3ee884029cc7d2db0478c2691c1f91e3b2a241		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70B1 9800 bytes
font_02_sfnt_off00009240.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9240 4324 bytes

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