Malicious PDF — malware analysis report

Static analysis result for SHA-256 b125e246b4c9b358…

MALICIOUS

PDF

39.3 KB Created: 2020-08-29 21:57:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 478211b4241526e8bdc302cb1e55b979 SHA-1: 28c59cd03386f5ebffbb1e443ab90a3a28bc59df SHA-256: b125e246b4c9b35879b552c146844811549efa4818e98d4c3697fd24a39b1887
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com, and one critical link to a known malicious redirector at ttraff.ru. The document body, though heavily obfuscated, contains the malicious URL, suggesting the document's primary purpose is to redirect users to malicious infrastructure. 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.ru/wix?keyword=tracto+espinotalamico+lateral
    • https://static.usrfiles.com/ugd/20d83a_212f58864afa4ad0ae2c4a13f613f4f1.pdf
    • https://static.usrfiles.com/ugd/b8c837_7965b7021d734b74bcf01906dc02aa5d.pdf
    • https://static.usrfiles.com/ugd/529dbf_67b1263b97e1427383b8bfaa0f863fba.pdf
    • https://static.usrfiles.com/ugd/b8c837_8c4eed335fd642a4af7c3d861c14881c.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rafudegilezenetizaxesuvos.pdf
    • https://cdn.shopify.com/s/files/1/0434/3883/3816/files/jabokerinodopitap.pdf
    • https://cdn.shopify.com/s/files/1/0438/3784/9762/files/10436122576.pdf
    • https://cdn.shopify.com/s/files/1/0434/4994/2176/files/cara_video_di_proxy_browser_android.pdf
    • https://cdn.shopify.com/s/files/1/0428/0313/4627/files/39005839944.pdf
    • https://cdn.shopify.com/s/files/1/0433/1978/7675/files/geforce_now_supported_games.pdf
    • https://cdn.shopify.com/s/files/1/0429/4184/1575/files/5464491122.pdf
    • https://cdn.shopify.com/s/files/1/0434/5249/8070/files/aide_memoire_electronique.pdf
    • https://cdn.shopify.com/s/files/1/0463/2389/2381/files/depoxetinawimararer.pdf
    • https://static.usrfiles.com/ugd/b8c837_10d67812611b4847826248b5193855b4.pdf
    • https://static.usrfiles.com/ugd/50c35f_8b0cd9ef33464f40bffb754b0436a3fb.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_off00005e7f.bin
53c43690b8d8dc77828354d47a7a53fea521e11377987eb9881082adf1f3dfc3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E7F 5028 bytes
font_01_sfnt_off00006f7b.bin
05d9ece5c7dd735316dc1d837fa131cfa4a805a859dfbe618642abd7333994a5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F7B 9684 bytes

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