Malicious PDF — malware analysis report

Static analysis result for SHA-256 5304bf1447455407…

MALICIOUS

PDF

39.9 KB Created: 2020-08-31 04:41:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 61e5eb444160ad494277c0e043158f73 SHA-1: 716d31965c7de0532d94093a8459a6973d0b615d SHA-256: 5304bf144745540768dd4bd48b2eb52a2f4daf31e124d05a937ca72dc2925d49
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 Command and Scripting Interpreter: PowerShell

The PDF file contains a heuristic firing for a malicious redirector link pointing to 'https://ttraff.ru/wix?keyword=in+case+of+emergency+card+template+uk'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, including one to 'https://cdn.shopify.com/s/files/1/0437/7106/8577/files/86490275076.pdf'. The presence of a visual download button lure further supports a social engineering attack pattern. No scripts were extracted, but the combination of a malicious redirector and link farm suggests a phishing or malware distribution attempt.

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.ru/wix?keyword=in+case+of+emergency+card+template+uk
    • https://cdn.shopify.com/s/files/1/0437/7106/8577/files/86490275076.pdf
    • https://cdn.shopify.com/s/files/1/0433/0458/3318/files/denemipanodubelubo.pdf
    • https://cdn.shopify.com/s/files/1/0431/1724/8672/files/63185920544.pdf
    • https://static.usrfiles.com/ugd/b8c837_778fabad083c45bcac7329df819bf7d4.pdf
    • https://static.usrfiles.com/ugd/738632_40eacd871f054456bc4706e56c9885d8.pdf
    • https://static.usrfiles.com/ugd/4c1554_257f8f4c3f33470da795adb230286acb.pdf
    • https://static.usrfiles.com/ugd/5ecadc_a83f98b265744e9f9366a34322c11e3c.pdf
    • https://static.usrfiles.com/ugd/4ae4db_d0605ca5df7b468a9ebd215568d41b35.pdf
    • https://static.usrfiles.com/ugd/eda9ba_c3e29c14b40e4e41a19888c92d02ef2e.pdf
    • https://static.usrfiles.com/ugd/b8c837_a15e2bb99a464cf48c44de4e05ca7842.pdf
    • https://static.usrfiles.com/ugd/111c46_6bc5b1a1522a4bf4a049b16a549357b6.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_off00005e2d.bin
335744ab24e6cbb574ac4ec312319f3aff827ef51d83dfc66264506726f9526c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E2D 5580 bytes
font_01_sfnt_off00007111.bin
59c4713eb1e13194633a7181ed8d03097bb6e119668aaf07ca35b4882a5821c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7111 9944 bytes

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