Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ff59560286f6053…

MALICIOUS

PDF

43.9 KB Created: 2020-08-09 03:09:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 813ef232cb59d802e531b00385318f61 SHA-1: d5ae3cfd5a85c52dc13541338b6d8d990ee1d22b SHA-256: 4ff59560286f60537205ede1ef966c3e6568f4d0a1faaeaa19f28597cd3eb07a
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at `ttraff.ru`. This suggests a link farm or SEO poisoning tactic to lure users to malicious content. The document body contains the malicious URL, indicating a direct attempt to trick the user into clicking it. No scripts were extracted, limiting the analysis of further payload delivery.

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.ru/pify?keyword=analise+de+dados+com+python+pdf
    • http://files.jewishnanaimo.com/uploads/1/3/2/6/132683137/lesidujabe.pdf
    • http://files.chrislilly.tv/uploads/1/3/0/8/130814078/1329bc08151883c.pdf
    • http://jikuna.mrserickagraham.org/uploads/1/3/0/7/130739783/zekazibilosejesa.pdf
    • https://cdn.shopify.com/s/files/1/0433/5104/8357/files/78682059747.pdf
    • https://cdn.shopify.com/s/files/1/0431/4189/0208/files/dubstep_ringtones_free.pdf
    • https://cdn.shopify.com/s/files/1/0431/8802/7556/files/5e_death_domain.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/64630415929.pdf
    • https://cdn.shopify.com/s/files/1/0427/8000/0423/files/pune_road_map.pdf
    • https://cdn.shopify.com/s/files/1/0437/7785/1550/files/80245493190.pdf
    • https://cdn.shopify.com/s/files/1/0431/6289/4495/files/60384960756.pdf
    • https://cdn.shopify.com/s/files/1/0429/4760/8730/files/rusozuxibekiganowitosipof.pdf
    • https://cdn.shopify.com/s/files/1/0431/6934/9794/files/86354609640.pdf
    • https://cdn.shopify.com/s/files/1/0432/4625/6295/files/gabotokixefodurevutimafi.pdf
    • https://cdn.shopify.com/s/files/1/0432/0559/1200/files/sowosisofarozewitoripese.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_off000069a4.bin
d10effcbe9826b3eb1f667cd25d2b2c8acc94492e13d06634aa3f48df52f7f04		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69A4 5392 bytes
font_01_sfnt_off00007be5.bin
13a90b01ffe7e243dcb536f5aa3f02b5dd8b1e90650fe4e1628fe114aa8e15ae		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BE5 12328 bytes

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