Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d5cbbdcf3178ca6…

MALICIOUS

PDF

43.4 KB Created: 2020-08-13 00:15:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7a849b45b9e991b80df4528aa7dd5af2 SHA-1: 2fd8118facf7d685532caf331b2f610223078955 SHA-256: 9d5cbbdcf3178ca65c4a67360f026b091f386fae4dd8b836c52592eb13f29c5b
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=candlestick+types+pdf'. It also exhibits characteristics of a PDF link farm, with numerous embedded links to external PDFs, many hosted on Shopify. The document body, though heavily obfuscated, contains the same redirector URL, reinforcing the lure. No scripts were extracted, but the primary attack vector appears to be social engineering via a deceptive document.

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.com/pify?keyword=candlestick+types+pdf
    • http://files.whitehorsevenue.com/uploads/1/3/0/7/130775997/vajadelogivofedem.pdf
    • http://files.neonfactory.ca/uploads/1/3/0/7/130740130/rikoxanujuv.pdf
    • http://jididali.xsaia.org/uploads/1/3/0/9/130969465/8530974.pdf
    • https://cdn.shopify.com/s/files/1/0433/0595/9574/files/negexisajerunarusanere.pdf
    • https://cdn.shopify.com/s/files/1/0430/2418/7549/files/4307808663.pdf
    • https://cdn.shopify.com/s/files/1/0434/3853/8904/files/setoxavud.pdf
    • https://cdn.shopify.com/s/files/1/0430/1537/2949/files/66117023015.pdf
    • https://cdn.shopify.com/s/files/1/0429/8512/8095/files/acidosis_metabolica_causas.pdf
    • https://cdn.shopify.com/s/files/1/0431/9664/5538/files/world_map_with_countries_names_and_capitals.pdf
    • https://cdn.shopify.com/s/files/1/0428/3482/1287/files/jatazugidanajubiledipas.pdf
    • https://cdn.shopify.com/s/files/1/0431/5060/6496/files/number_generator_1-_100.pdf
    • https://cdn.shopify.com/s/files/1/0431/1613/4551/files/96842792684.pdf
    • https://cdn.shopify.com/s/files/1/0430/3169/1421/files/91988417972.pdf
    • https://cdn.shopify.com/s/files/1/0430/8015/5290/files/34766922064.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_off00006c73.bin
c34d43b62a1a08d2b1c1cd7e8c126026e34b9a2a5c6389e465d8b6c4acd35780		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C73 5124 bytes
font_01_sfnt_off00007e04.bin
b329469157a8a41e945e817d315d0089c3024704dbfe210ef00a1ecd2cea6fe7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E04 10288 bytes

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