Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbb20ab8adad6917…

MALICIOUS

PDF

40.3 KB Created: 2020-08-29 16:47:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 84e513e43bbb8665b390c71e03dd6bf4 SHA-1: 529d79cfcf14eb689f87ebbb823fe4190f9e4cf1 SHA-256: fbb20ab8adad69170d86123678488a6dc8cf2a568eb5b52a63ecdb40a952dea2
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a PDF link farm. One of the primary links, 'https://ttraff.ru/wix?keyword=algebra+2+and+trigonometry+textbook', points to known malicious redirector infrastructure. This suggests the document's purpose is to lure users to malicious sites, likely for phishing or malware distribution.

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=algebra+2+and+trigonometry+textbook
    • https://static.usrfiles.com/ugd/b8c837_d070fc9f6bbe473f82c5944130ae5854.pdf
    • https://static.usrfiles.com/ugd/b8c837_0ee62c131f8448449de202204ebdcb1c.pdf
    • https://static.usrfiles.com/ugd/b8c837_07236b7a38be4270b572865f87ad0d89.pdf
    • https://static.usrfiles.com/ugd/b8c837_b7b2be44753840888bbca63315dc089b.pdf
    • https://cdn.shopify.com/s/files/1/0432/6424/5925/files/77693027928.pdf
    • https://cdn.shopify.com/s/files/1/0427/9674/4871/files/www_notdoppler_comn.pdf
    • https://cdn.shopify.com/s/files/1/0434/5649/5769/files/xeguposasewudefadeto.pdf
    • https://cdn.shopify.com/s/files/1/0430/3791/7345/files/mini_bypass_gastrico.pdf
    • https://static.usrfiles.com/ugd/b8c837_f101c65fa2fe4cafa78c193f6aab79a0.pdf
    • https://static.usrfiles.com/ugd/b8c837_706b2c4640fb4361a657538c134bb587.pdf
    • https://static.usrfiles.com/ugd/5be868_3bae551a83de452fad560c03e13a8c68.pdf
    • https://cdn.shopify.com/s/files/1/0435/6587/5359/files/35576346574.pdf
    • https://cdn.shopify.com/s/files/1/0431/5463/6961/files/jisozuwatajozibupulololi.pdf
    • https://cdn.shopify.com/s/files/1/0432/5592/2856/files/50546148342.pdf
    • https://cdn.shopify.com/s/files/1/0435/5470/1463/files/totigesorinebuwujapalu.pdf
    • https://cdn.shopify.com/s/files/1/0434/0265/7957/files/kufesajewutunovod.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_off00005f5b.bin
b9fab57c472c0b7bba8adcc132cdfb2985041bb83f1e9dbddbed8ecfb5b8f6f6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F5B 5460 bytes
font_01_sfnt_off000071dc.bin
279c0e03ae4c902993954198d02e5cbb5d094c14c468dd2df8b5f0276aaf39d7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71DC 10072 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.