Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ac2eeed79c0de63…

MALICIOUS

PDF

44.6 KB Created: 2020-08-29 05:32:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9577d011d321ee8d3bb6ff78f94eaa70 SHA-1: bc1aa6af87ade339030f6ed347ff4fa004251abb SHA-256: 7ac2eeed79c0de63616f28f79d522d480ebe7534a74134b7646928d30fc383f8
120 Risk Score

Malware Insights

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

The PDF contains numerous links, including one to a known malicious redirector at 'https://ttraff.com/wix?keyword=yoga+poses+for+beginners+pdf'. This URL is likely used to redirect the user to a malicious site. The document body, though heavily obfuscated, contains references to the redirector URL and other URLs hosted on Shopify and static.usrfiles.com, suggesting a link farm or SEO poisoning tactic to distribute the malicious content. No scripts were extracted from this sample.

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=yoga+poses+for+beginners+pdf
    • https://cdn.shopify.com/s/files/1/0440/8298/7158/files/serelatogiwuna.pdf
    • https://cdn.shopify.com/s/files/1/0460/2694/8767/files/suwubasadefitewiworufeb.pdf
    • https://cdn.shopify.com/s/files/1/0430/4296/3613/files/vomirijakufigos.pdf
    • https://cdn.shopify.com/s/files/1/0430/5689/0013/files/sanisuzovumuwub.pdf
    • https://cdn.shopify.com/s/files/1/0431/7757/4557/files/46974648058.pdf
    • https://static.usrfiles.com/ugd/b8c837_6f1532a2c80a424cbfe51b4caba5ce6c.pdf
    • https://static.usrfiles.com/ugd/b8c837_d2e163d0ad8f4ade89c02e5fa1497de2.pdf
    • https://static.usrfiles.com/ugd/b8c837_7db0d350fd5647a1a2727bb7f3977c85.pdf
    • https://static.usrfiles.com/ugd/b8c837_9d97030adb904e1da4e1960c69db5cda.pdf
    • https://static.usrfiles.com/ugd/b8c837_98ac83487c3d426ab1a18b3b5ffe185f.pdf
    • https://static.usrfiles.com/ugd/b8c837_40a264a103e64c16a2228599a11d33e9.pdf
    • https://static.usrfiles.com/ugd/b8c837_ebcd6a8473bc435fba4d9a292a4920cd.pdf
    • https://static.usrfiles.com/ugd/b8c837_d4fed21158834cdfa3540cd63c02d22a.pdf
    • https://static.usrfiles.com/ugd/b8c837_4096fe952ff041c2bf31416b9102844a.pdf
    • https://cdn.shopify.com/s/files/1/0434/9932/3558/files/mivopimagu.pdf
    • https://cdn.shopify.com/s/files/1/0429/3161/7945/files/dufafipotumawenapituxamog.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_off00007149.bin
781a84547af08a500da85d8cf44a372a9a49a39246a5b09b4324959e47ba62d9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7149 5280 bytes
font_01_sfnt_off00008343.bin
d8e650bb584aa9380f81edcec21c045d33620313eb82d6e6a69207dc06d6a6fa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8343 10240 bytes

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