Malicious PDF — malware analysis report

Static analysis result for SHA-256 459592d3e800e12b…

MALICIOUS

PDF

57.3 KB Created: 2020-07-26 19:55:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 898f95a1417eb07eb0e397079b45dd04 SHA-1: cadaa853cb1fd37624fa0f0c7f53ff880c20af89 SHA-256: 459592d3e800e12bba1d322a1fe47b80d247a6975a0805228177a86781415525
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, directing users to a URL associated with a link farm. The document body, though heavily obfuscated, contains text related to 'cartoon character creator software free', suggesting a lure. The presence of numerous external PDF links, many pointing to Shopify domains, further indicates a link farm strategy. The primary malicious IOC is the redirector URL, which is likely used to funnel victims to further malicious content.

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=cartoon+character+creator+software+free
    • http://files.schoolofmythsanddreams.com/uploads/1/3/2/3/132302735/090218ec3b177.pdf
    • http://files.thepathimon.com/uploads/1/3/0/7/130776096/61e198498e6.pdf
    • http://files.kiuyanran.com/uploads/1/3/0/7/130739456/fegatupipidafor.pdf
    • http://files.noeky1980photography.com/uploads/1/3/0/7/130740073/gowudor.pdf
    • http://files.kiuyanran.co
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/99289858455.pdf
    • https://cdn.shopify.com/s/files/1/0427/6856/4380/files/25497958048.pdf
    • https://cdn.shopify.com/s/files/1/0434/7117/5846/files/verotogusi.pdf
    • https://cdn.shopify.com/s/files/1/0431/1102/2756/files/73759659959.pdf
    • https://cdn.shopify.com/s/files/1/0428/4389/8019/files/remizinogipujobikifopifak.pdf
    • https://cdn.shopify.com/s/files/1/0429/7539/5993/files/kogudififikibasezut.pdf
    • https://cdn.shopify.com/s/files/1/0432/4609/2443/files/29548236079.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/6219719719.pdf
    • https://cdn.shopify.com/s/files/1/0431/2412/9952/files/fuvonujub.pdf
    • https://cdn.shopify.com/s/files/1/0433/2270/4030/files/98674947505.pdf
    • https://cdn.shopify.com/s/files/1/0428/2236/9446/files/vuwonudizilajigotow.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_off0000a34d.bin
5dfb03b2062ac353f5e56b4bd519ad3441dc2a41327e73b41a25c2218b10619f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA34D 4792 bytes
font_01_sfnt_off0000b395.bin
1568c1b272effa444ed63a111c1e495d53c8f09ded50ff487ac3bb7ebd229a2c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB395 10620 bytes

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