Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e6dd2022e679513…

MALICIOUS

PDF

37.1 KB Created: 2020-08-29 21:43:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8b1cb61ee30084e611a622b1be5f72ca SHA-1: 5800bbad04041f15961d5337f983b39067664828 SHA-256: 9e6dd2022e679513523d74602117463315cf67ac6c7563c4d0fb6998225f3de8
120 Risk Score

Malware Insights

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

The PDF file contains a link that redirects to a known malicious domain, ttraff.ru, under the guise of a download for 'The land before time'. This is further supported by heuristics indicating a malicious redirector link and a PDF link farm. The document body, though heavily obfuscated, contains the same lure text and the malicious URL.

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=the+land+before+time+download
    • https://static.usrfiles.com/ugd/b8c837_033de887905148569c3e85de2ab17e19.pdf
    • https://static.usrfiles.com/ugd/07625c_4db61924467743a6b0bd98159c7a4afb.pdf
    • https://static.usrfiles.com/ugd/b8c837_34660902ac7545cfbb8a3f9c8db5ca92.pdf
    • https://static.usrfiles.com/ugd/b8c837_17a176ca866e4eb795c9ec8c5114e4cf.pdf
    • https://static.usrfiles.com/ugd/b8c837_a5b6b2e2ebab4cee956829f534e28626.pdf
    • https://static.usrfiles.com/ugd/b8c837_f7e6f87a5bd543868fb6083edc707b68.pdf
    • https://static.usrfiles.com/ugd/b8c837_004721e6029e43778513f5a4f5f0b2a1.pdf
    • https://static.usrfiles.com/ugd/b8c837_81a1a1ea9071436fa46061a6bd567d35.pdf
    • https://static.usrfiles.com/ugd/8cbfce_014ac25b30a144d4ae8868479fe961d8.pdf
    • https://cdn.shopify.com/s/files/1/0430/3526/3138/files/wadosilasopusepupa.pdf
    • https://cdn.shopify.com/s/files/1/0433/8122/7672/files/traffic_rider_apk_mod_ios.pdf
    • https://cdn.shopify.com/s/files/1/0431/6397/5835/files/gegurifajorefona.pdf
    • https://cdn.shopify.com/s/files/1/0430/7812/3669/files/72745907624.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_off00004c8f.bin
ae12e252e29567a0f7da24e046e0e5663c261c08a474debb0b035114b6b7c07d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4C8F 5148 bytes
font_01_sfnt_off00005df0.bin
538cbeb4340b7718a53508923e5f706861958d14bc94eb8fba8cf870277923c9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DF0 13132 bytes

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