Malicious PDF — malware analysis report

Static analysis result for SHA-256 bea1c3081bf990c4…

MALICIOUS

PDF

40.7 KB Created: 2020-08-30 13:18:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8963137e5e7678bbac87d135c70ff9b3 SHA-1: 1eb1f9a35ce14e5590a378742b09e536a60ca8c7 SHA-256: bea1c3081bf990c4e642d6974f5ce5dd6e88fc9b232164e6685827b7f283ea5c
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to the presence of numerous embedded links, a technique often used for SEO manipulation or to redirect users to malicious sites. One of the primary URLs, 'https://ttraff.ru/wix?keyword=Orinoquia+jaspe+pdf', is flagged as a malicious redirector. The document body contains garbled text and embedded URLs, further supporting the malicious intent.

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=Orinoquia+jaspe+pdf
    • https://static.usrfiles.com/ugd/b88e3d_70e4326caca3445f938c54244879bb31.pdf
    • https://static.usrfiles.com/ugd/b8c837_9ca535b32b6c4548aac972c41b2ac955.pdf
    • https://static.usrfiles.com/ugd/b8c837_5cac9be0fe354da4b7c349e73b248f96.pdf
    • https://cdn.shopify.com/s/files/1/0439/4654/1211/files/bebe_rexha_meant_to_be.pdf
    • https://cdn.shopify.com/s/files/1/0430/9689/9733/files/2801723386.pdf
    • https://cdn.shopify.com/s/files/1/0436/2344/8736/files/91946696860.pdf
    • https://cdn.shopify.com/s/files/1/0427/7580/6119/files/vurulene.pdf
    • https://cdn.shopify.com/s/files/1/0428/9200/1433/files/jizesa.pdf
    • https://cdn.shopify.com/s/files/1/0434/4912/2983/files/exercice_orthographe_ce2.pdf
    • https://cdn.shopify.com/s/files/1/0462/0989/2505/files/program_activate_windows_10_free.pdf
    • https://cdn.shopify.com/s/files/1/0431/1282/4993/files/lodarusirebogibudetiped.pdf
    • https://cdn.shopify.com/s/files/1/0432/8731/4585/files/code_geass_op.pdf
    • https://static.usrfiles.com/ugd/b98abb_1520dcf2252d4768a60c42fe403db174.pdf
    • https://static.usrfiles.com/ugd/b8c837_5275b60d53e04940a0f0ca0851ebc307.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000473a.bin
9192b1320c8de32da3691fe268e491fbf2e283f8831b181d1da8b1c96a053a92		 pdf-font-stream PDF embedded font (sfnt) at offset 0x473A 5232 bytes
font_01_sfnt_off00005915.bin
ff656cd3edcff5b11218b2bc4844b273cf6f26adcd2069774738cb7b0cf743db		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5915 9836 bytes
font_02_sfnt_off00007b00.bin
7407a6ba60503e26e224dca860c88b8ac4f2cceee5865f02f67bce42d389d246		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B00 17880 bytes

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