Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b50cc59c8f76067…

MALICIOUS

PDF

45.1 KB Created: 2020-07-27 20:27:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3df70faf1331e46bd40cdb240e222e37 SHA-1: f299b8c40d5170e55a31c50c41cebca240c440cc SHA-256: 7b50cc59c8f760670adb3b341fa3b02b863a86ae568a7f4a88a181a5aceb10a1
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of external links, many of which point to a redirector service known to host malicious content. The document body, though heavily obfuscated, suggests a lure related to a 'guide book PDF'. The primary malicious IOC is the redirector URL, which is likely used to funnel victims to a phishing or malware-hosting site.

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=ffxii+zodiac+age+guide+book+pdf
    • http://files.coltsbooster.com/uploads/1/3/2/7/132710759/4681410.pdf
    • http://files.themunrosofglenorrin.com/uploads/1/3/2/8/132814680/4466884.pdf
    • http://files.firsttrinitylutheranchurch.com/uploads/1/3/1/4/131408117/d7cd0bb9ecd.pdf
    • http://files.argentcymrustandardpoodles.com/uploads/1/3/0/7/130776164/1758755.pdf
    • https://cdn.shopify.com/s/files/1/0431/2639/0951/files/16916263478.pdf
    • https://cdn.shopify.com/s/files/1/0433/7578/8190/files/7854405828.pdf
    • https://cdn.shopify.com/s/files/1/0431/1796/9570/files/89905273692.pdf
    • https://cdn.shopify.com/s/files/1/0434/4394/5622/files/56450826015.pdf
    • https://cdn.shopify.com/s/files/1/0434/0888/3870/files/29417603525.pdf
    • https://cdn.shopify.com/s/files/1/0432/0067/6003/files/bodotajemibovifi.pdf
    • https://cdn.shopify.com/s/files/1/0431/4028/4577/files/28386793449.pdf
    • https://cdn.shopify.com/s/files/1/0431/8560/2721/files/pufovef.pdf
    • https://cdn.shopify.com/s/files/1/0429/4760/8730/files/70850625112.pdf
    • https://cdn.shopify.com/s/files/1/0433/2853/6731/files/77284484550.pdf
    • https://cdn.shopify.com/s/files/1/0431/6643/3435/files/82312742534.pdf
    • https://cdn.shopify.com/s/files/1/0432/2790/6206/files/4747285326.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_off0000714b.bin
9d6de7b704a422b0771db3d00f9d5ca84ebd116e49ab3884fe4dd92c09416dea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x714B 4988 bytes
font_01_sfnt_off00008262.bin
cf39bdc30e1566d764d94d0ffe94eda25be1016b1877f0c4136619b0070fc546		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8262 10808 bytes

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