Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ee76308f32f0cc6…

MALICIOUS

PDF

46.7 KB Created: 2020-08-29 12:15:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 70aba5810664d60da04b649ab1ec2a8c SHA-1: e317a51445a21f4852cd557b72b60bf965a0b6d3 SHA-256: 7ee76308f32f0cc632306758764b2b24e2cf02febc64658acec2b3e059e41864
120 Risk Score

Malware Insights

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

The PDF was flagged for containing a malicious redirector link and a large number of external links, suggesting a link farm. The primary malicious URL identified is https://ttraff.ru/wix?keyword=gest%25C3%25A3o+educacional+uma+quest%25C3%25A3o+paradigm%25C3%25A1tica+heloisa+luck+resumo. This pattern is often used to distribute malware or conduct phishing campaigns by redirecting users through multiple layers of sites.

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=gest%25C3%25A3o+educacional+uma+quest%25C3%25A3o+paradigm%25C3%25A1tica+heloisa+luck+resumo
    • https://static.usrfiles.com/ugd/b8c837_2b48c706326740b9a00ace5824efd83d.pdf
    • https://static.usrfiles.com/ugd/b8c837_0725ec1cacfc4d5fa647dcaf7a2bfee7.pdf
    • https://static.usrfiles.com/ugd/d2751c_3518fc33834f4d20a8b6a42f6e881ce5.pdf
    • https://static.usrfiles.com/ugd/b8c837_4fb2f9cbee6942548e2d36f1f208073c.pdf
    • https://static.usrfiles.com/ugd/b8c837_e56ee6fdb47b4ebaafe091e3d54d311d.pdf
    • https://cdn.shopify.com/s/files/1/0460/9182/9412/files/gabikiverafebisezis.pdf
    • https://cdn.shopify.com/s/files/1/0431/6862/8892/files/rokakojif.pdf
    • https://cdn.shopify.com/s/files/1/0431/7849/2072/files/segebuwasisubokaxi.pdf
    • https://cdn.shopify.com/s/files/1/0433/3250/1656/files/clicks_per_minute.pdf
    • https://cdn.shopify.com/s/files/1/0432/7725/4814/files/dunarukekipa.pdf
    • https://cdn.shopify.com/s/files/1/0433/3882/5887/files/95580797181.pdf
    • https://cdn.shopify.com/s/files/1/0439/3703/8494/files/git_cherry_pick.pdf
    • https://static.usrfiles.com/ugd/b8c837_3c29623315d34921a674195d9875160d.pdf
    • https://static.usrfiles.com/ugd/b8c837_9e0065230e734c89bf394a82127e6c96.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_off00006e95.bin
829d6abf7c504e7a9e0ee2731073fb26dfcd6261ed796ff293e372866e68b4b3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E95 6260 bytes
font_01_sfnt_off00008280.bin
a112f583bca12b7cb93d76b3bd0d3b925efb929600473eaabf8691d22d17b9b1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8280 13348 bytes

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