Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd1550c18d727813…

MALICIOUS

PDF

40.9 KB Created: 2020-08-30 19:44:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7088d086e862b0453ffac8c7844fb974 SHA-1: 9436fc9884eb8ea8e7c18cf33c203dd71927aaf7 SHA-256: bd1550c18d7278133ead9d3d8c9f123b4e18295587599725b90bf11187c863ea
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 URLs, with one identified as a malicious redirector. The document body, though heavily obfuscated, includes the URL 'https://ttraff.com/wix?keyword=how+to+get+monkey+greegree+back', which is flagged as malicious. The presence of a PDF link farm heuristic further indicates a pattern of distributing links, likely for malicious purposes.

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.com/wix?keyword=how+to+get+monkey+greegree+back
    • https://static.usrfiles.com/ugd/3cb679_950e63b1d51f4a81a41eac017aaf6525.pdf
    • https://static.usrfiles.com/ugd/314c35_c7f1fe1b07aa46dc9ff88ec5637e78d8.pdf
    • https://static.usrfiles.com/ugd/4826f5_8a903106afc84934ad778df7b374b2df.pdf
    • https://static.usrfiles.com/ugd/63022f_cdd7ca8b016941e0b5ee8b3e917c21ef.pdf
    • https://static.usrfiles.com/ugd/80c1db_fd7d8ceaf08243309d63119b72b7de93.pdf
    • https://static.usrfiles.com/ugd/5b9a87_f0cce01b589e42deb0bfb6155a76b955.pdf
    • https://static.usrfiles.com/ugd/0c268c_1e0582984d4444f8a523b79fbe263530.pdf
    • https://cdn.shopify.com/s/files/1/0440/2269/4046/files/sp_162_d.pdf
    • https://cdn.shopify.com/s/files/1/0427/9900/5863/files/destination_folder_must_be_empty_steam.pdf
    • https://cdn.shopify.com/s/files/1/0434/6534/3138/files/81559059385.pdf
    • https://cdn.shopify.com/s/files/1/0440/8272/5029/files/2115097110.pdf
    • https://static.usrfiles.com/ugd/b8c837_84f8ae46630a4b688afbf3f941bb323a.pdf
    • https://static.usrfiles.com/ugd/71fd01_a8cbbcbc91db469eb5365828cb6868db.pdf
    • https://static.usrfiles.com/ugd/b8c837_bfe4b25bd3ae4f6299dd6680bcdcd65b.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_off00005f1b.bin
2637a703b5d687d2371ba0507138acc583e994e63af0b217854b00d708935815		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F1B 5268 bytes
font_01_sfnt_off0000710b.bin
77a5e82ccbc09ddeefcfba64b67df15bbd5d5e3bd29aba2000c72fa5d347900c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x710B 11744 bytes

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