Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd806743c0aaec81…

MALICIOUS

PDF

47.0 KB Created: 2020-08-20 08:17:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3e05b13e332d190c0979d0006b689094 SHA-1: e5aa7d75b0f60a217b66546fd178a319bdf82fad SHA-256: dd806743c0aaec8158a7bda60e6cda2c111c521dc5889dba0d58a8f3117525b4
128 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a download button, intended to lure users to a malicious site. The document body contains garbled text but also includes the target URL, suggesting a social engineering attempt. The presence of a link farm heuristic further indicates malicious intent to distribute links.

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.cc/pify?keyword=early+childhood+anecdotal+record+template
    • http://files.twontwowholesale.com/uploads/1/3/1/3/131398406/168376.pdf
    • https://cdn.shopify.com/s/files/1/0432/9416/3109/files/vawoxusedan.pdf
    • https://cdn.shopify.com/s/files/1/0433/9341/7367/files/acer_aspire_4750_wireless_driver.pdf
    • https://cdn.shopify.com/s/files/1/0437/7234/6526/files/nazegebewarunela.pdf
    • https://cdn.shopify.com/s/files/1/0431/7056/2209/files/95167963437.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/20011772627.pdf
    • https://cdn.shopify.com/s/files/1/0440/8619/8424/files/vowofevavaregolugiwiwoj.pdf
    • https://cdn.shopify.com/s/files/1/0452/1892/2653/files/pifemotukikefakenuwole.pdf
    • https://cdn.shopify.com/s/files/1/0432/9560/4891/files/suxurilavugetujije.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_off00007ae9.bin
70836e412bc7a9012568136b5e33cc6bc67f2eb3bc9089369a7e10eba204f891		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AE9 5192 bytes
font_01_sfnt_off00008c67.bin
b349c65f9c206816209151977909cc4608190d902e57150be5b584f0c6f17c78		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C67 10120 bytes

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