Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed5dddc893077eba…

MALICIOUS

PDF

50.2 KB Created: 2020-08-10 20:14:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7547aadba5a66b442d813166be625ae3 SHA-1: 288ad9148ffce6d382b2762ffb6191f3e86a4c8f SHA-256: ed5dddc893077eba6b58fa6c15ab79b9887a8d41312ff907ed0343d5fcf3f67e
120 Risk Score

Malware Insights

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

The PDF document contains a link farm designed to redirect users to malicious infrastructure. The primary malicious URL identified is https://ttraff.cc/pify?keyword=demographic+transition+theory+in+nigeria+pdf, which is flagged as a malicious redirector. The document body, though heavily obfuscated, contains this URL and numerous other links hosted on Shopify, likely to improve search engine ranking and evade detection. 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.cc/pify?keyword=demographic+transition+theory+in+nigeria+pdf
    • http://files.xminimumy.com/uploads/1/3/2/6/132695546/e8a337e3ecb.pdf
    • http://files.jenniferwilsonwellness.com/uploads/1/3/1/4/131405948/7784900.pdf
    • http://files.camera1.ca/uploads/1/3/1/3/131380413/pizixejawij.pdf
    • https://cdn.shopify.com/s/files/1/0428/1332/5471/files/74314632378.pdf
    • https://cdn.shopify.com/s/files/1/0432/1227/5870/files/19589308344.pdf
    • https://cdn.shopify.com/s/files/1/0438/4532/0861/files/98869207783.pdf
    • https://cdn.shopify.com/s/files/1/0432/0198/6723/files/kidagutojiweb.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/14981909947.pdf
    • https://cdn.shopify.com/s/files/1/0431/2812/7654/files/2751800268.pdf
    • https://cdn.shopify.com/s/files/1/0429/3237/1622/files/95936488802.pdf
    • https://cdn.shopify.com/s/files/1/0427/4431/6070/files/automatismo_industriales_editex.pdf
    • https://cdn.shopify.com/s/files/1/0435/2393/2311/files/certified_nursing_assistant_resume.pdf
    • https://cdn.shopify.com/s/files/1/0438/2025/3344/files/zurebederoxasevoluxakox.pdf
    • https://cdn.shopify.com/s/files/1/0430/6688/4250/files/basic_probability_examples.pdf
    • https://cdn.shopify.com/s/files/1/0434/3100/2264/files/arinc_429.pdf
    • https://cdn.shopify.com/s/files/1/0434/5937/9357/files/jijamagunizinutikilodosaz.pdf
    • https://cdn.shopify.com/s/files/1/0431/6141/9927/files/37266785738.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_off00008584.bin
4fd795904b76287f3a178b113b5b3e717cd20ec9449b2c4ea99e251cb4b1a4db		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8584 5636 bytes
font_01_sfnt_off00009893.bin
fb9d04849d7ced907594efb2b1bb8a3b4a316393f0312e14fbd5504fc8a40300		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9893 10304 bytes

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