Malicious PDF — malware analysis report

Static analysis result for SHA-256 a59ce348e5a95c8b…

MALICIOUS

PDF

57.7 KB Created: 2020-07-31 11:44:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 55a280abcc32160adf1805f15eb46026 SHA-1: b6d563a9a0defcf99a720e56efc7d869c119907b SHA-256: a59ce348e5a95c8b2c9f6b70067227aa8d8480ddc5e206e1a581fc665811fe93
120 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.cc, disguised as a search result for a musical piece. The file also exhibits characteristics of a link farm, with numerous embedded links pointing to external PDF files, many hosted on Shopify. No scripts were extracted, and the document body was heavily obfuscated, preventing a deeper analysis of its specific intent beyond the malicious redirection.

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.cc/pify?keyword=anna+magdalena+bach+minuet+in+g+major+pdf
    • http://files.healthyfitlife.co.uk/uploads/1/3/2/6/132696030/xiduzaxazed.pdf
    • http://files.louisianafur.com/uploads/1/3/1/6/131637570/2322747b.pdf
    • http://files.fruiggie.com/uploads/1/3/0/7/130740318/7750b9af62630a.pdf
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/zaperizuganiv.pdf
    • https://cdn.shopify.com/s/files/1/0430/8615/1833/files/viwazolofuvipoxivafete.pdf
    • https://cdn.shopify.com/s/files/1/0438/6163/9318/files/zegebotezovojaribe.pdf
    • https://cdn.shopify.com/s/files/1/0431/6862/8892/files/52632582948.pdf
    • https://cdn.shopify.com/s/files/1/0435/2894/5815/files/89940445249.pdf
    • https://cdn.shopify.com/s/files/1/0428/0870/5187/files/91479749633.pdf
    • https://cdn.shopify.com/s/files/1/0433/7962/2040/files/32488484434.pdf
    • https://cdn.shopify.com/s/files/1/0433/1234/9334/files/zudinemenoj.pdf
    • https://cdn.shopify.com/s/files/1/0435/7105/2707/files/wanugokawodaja.pdf
    • https://cdn.shopify.com/s/files/1/0427/6705/7063/files/nobele.pdf
    • https://cdn.shopify.com/s/files/1/0431/6574/5314/files/42648893304.pdf
    • https://cdn.shopify.com/s/files/1/0432/5156/4707/files/rufetazurobazax.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/
    • https://cdn.shopify.com

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000895a.bin
b32fab677de2449362016e7e4f35bc8354fb1aa34801fc03adad3cb38b361c60		 pdf-font-stream PDF embedded font (sfnt) at offset 0x895A 7072 bytes
font_01_sfnt_off0000a0c5.bin
cf3318fb503c3004b3c06a9be9c5490b73d4e256820d2dc3419a29f886f32d4d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA0C5 5476 bytes
font_02_sfnt_off0000b331.bin
c936931a2d2baef71fd02c45d19e5e0a4cbcddd8d43495cf32eec7e00f009424		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB331 10484 bytes

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