Malicious PDF — malware analysis report

Static analysis result for SHA-256 db68099211b78ff3…

MALICIOUS

PDF

76.9 KB Created: 2020-08-30 14:08:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3deb2ca664717a96ab0ae9c235545dfc SHA-1: 20b60d0b0a74f1af7de52e9331524d313b91d176 SHA-256: db68099211b78ff36c3a1991a1920a07b3efe98b0acc5bd3f92868279c11e139
140 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.cc/wix?keyword=mercy+overwatch+nsfw'. Additionally, a medium heuristic indicates a callback phishing lure, suggesting the document prompts the user to call a phone number. The embedded document body, though heavily obfuscated, contains the same malicious URL, reinforcing the attack pattern. The presence of a large number of external PDF links also suggests a link farm for SEO manipulation or distribution.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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.cc/wix?keyword=mercy+overwatch+nsfw
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/35209966956.pdf
    • https://cdn.shopify.com/s/files/1/0429/7375/7603/files/detunilage.pdf
    • https://cdn.shopify.com/s/files/1/0433/3309/1480/files/nedag.pdf
    • https://cdn.shopify.com/s/files/1/0433/2313/0009/files/nikebilazos.pdf
    • https://cdn.shopify.com/s/files/1/0440/8092/2789/files/xifonosavazij.pdf
    • https://static.usrfiles.com/ugd/dd4472_02a97622066c4d0e8a6b92a599f6800d.pdf
    • https://static.usrfiles.com/ugd/8b9728_9dfdbe98843e47dfbae9af46579e93f9.pdf
    • https://static.usrfiles.com/ugd/6846fe_95bd8645045a4d1e914c4c7e997b17bb.pdf
    • https://static.usrfiles.com/ugd/b8c837_4c087e9e525c44f28e53475af7b71141.pdf
    • https://static.usrfiles.com/ugd/b8c837_9a0d2140dc5c485c8c0658163308a9da.pdf
    • https://static.usrfiles.com/ugd/b8c837_bc3e5999a7de4cafb3d8ed7e44dd68bf.pdf
    • https://static.usrfiles.com/ugd/b8c837_dbe8f2e849d34d49b248efd8a4b23e16.pdf
    • https://static.usrfiles.com/ugd/3fc21f_ad79cced82154f18add480e94df7d9f6.pdf
    • https://static.usrfiles.com/ugd/b8c837_92a9a8818da742069e763b7a136ede4c.pdf
    • https://static.usrfiles.com/ugd/590778_9ea24f8374d3443297764a8cf9ac5dd5.pdf
    • https://static.usrfiles.com/ugd/b8c837_e2685bb0124642d180590ce27b53133b.pdf
    • https://static.usrfiles.com/ugd/b6edda_a6d9585a14de4a0da9a9de22c9129c80.pdf
    • https://static.usrfiles.com/ugd/b8c837_82e8055f5a22495692bf1ad55f98445c.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_off0000e73f.bin
d11d66742f010a8867f9daeb48604c48103bda2397339bba3de773d98ed5c989		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE73F 5196 bytes
font_01_sfnt_off0000f8f7.bin
50b09f5083493146c63c5569c22eb97fe355562360ca54709905900640d5138c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF8F7 1744 bytes
font_02_sfnt_off00010195.bin
fdacde1cfbaff4ce494f56b9e59de9dbfe3e7c0b6bfe4db2ca8b8324cf0c68da		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10195 10700 bytes

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