Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d0c7ddca6d7a145…

MALICIOUS

PDF

35.3 KB Created: 2020-09-02 12:01:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5373d69a852bcf2f935e681d96039ac1 SHA-1: 356fa8e173f1ab63f6297b53c507c1e7078575df SHA-256: 2d0c7ddca6d7a1450270e2a0842520458da6b7805281a93b55101359d8e30560
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 a large number of external links, a technique often used for SEO poisoning or to distribute malicious content. One of the embedded links, 'https://ttraff.club/wix?keyword=baarish+web+series+song+free', is flagged as a malicious redirector. The document body contains garbled text but includes the same keyword as the redirector URL, suggesting a lure. The file also contains numerous links to Shopify-hosted PDFs, which are likely part of a link farm.

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.club/wix?keyword=baarish+web+series+song+free
    • https://cdn.shopify.com/s/files/1/0432/2449/8333/files/xidasimirasuve.pdf
    • https://cdn.shopify.com/s/files/1/0429/9292/6883/files/21649789639.pdf
    • https://cdn.shopify.com/s/files/1/0439/2560/2472/files/vodafone_connect_app.pdf
    • https://static.usrfiles.com/ugd/b8c837_27a0d77b368d467cbf1d346bdddbaac8.pdf
    • https://static.usrfiles.com/ugd/b8c837_09334912cfe84fe58a2eb31cacd0fefb.pdf
    • https://static.usrfiles.com/ugd/e02969_018409ab9ba640639196c6734a041063.pdf
    • https://static.usrfiles.com/ugd/18f527_19cc49a6e0354c43b1d11c05f120178f.pdf
    • https://static.usrfiles.com/ugd/b8c837_da61417200a94ceba3db15df1b75b394.pdf
    • https://cdn.shopify.com/s/files/1/0427/6961/2966/files/28198805603.pdf
    • https://cdn.shopify.com/s/files/1/0432/6303/3502/files/58338672477.pdf
    • https://cdn.shopify.com/s/files/1/0436/5982/1209/files/kunejibapiwipidub.pdf
    • https://cdn.shopify.com/s/files/1/0434/3450/8455/files/free_acapella_link.pdf
    • https://cdn.shopify.com/s/files/1/0429/5933/9674/files/archery_mod_apk_latest_version.pdf
    • https://cdn.shopify.com/s/files/1/0431/2052/5469/files/server_rack_excel_sheet.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_off00004bac.bin
2c853e586b102fe4e50b2f1870f744248c1227be1704aa94c11eef0b8175a901		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4BAC 5280 bytes
font_01_sfnt_off00005db6.bin
b90f360abe3480fc0cde7261b02b443872dcd7810cff1d8b077cf65697f3be74		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DB6 10220 bytes

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