Malicious PDF — malware analysis report

Static analysis result for SHA-256 bef5725391728481…

MALICIOUS

PDF

40.7 KB Created: 2020-08-30 21:47:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 60b5335f87dd671c6dc51a283a9afa84 SHA-1: 084d91e85a336562440bb313c301e98966b13ae1 SHA-256: bef5725391728481ce173860cc1aa9ba72991dee33f238b6f76600273b7bba38
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to a URL that appears to be a SEO link farm. The document body, though heavily obfuscated, contains the same malicious URL. This suggests the document's primary purpose is to redirect users to malicious infrastructure, likely for further exploitation or phishing.

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=watch+pokemon+online+free+season+21
    • https://static.usrfiles.com/ugd/5899d5_919b5b0299694d77b2d1be064a6ec05c.pdf
    • https://static.usrfiles.com/ugd/3b7182_8936dff8e9d5425880e911dc8dd8e139.pdf
    • https://static.usrfiles.com/ugd/b8c837_1669f77a8efc4cfb815a8570660e00f2.pdf
    • https://static.usrfiles.com/ugd/b8c837_015a73c995244b06aa1f950515001515.pdf
    • https://cdn.shopify.com/s/files/1/0438/8575/6568/files/business_environment_defined.pdf
    • https://cdn.shopify.com/s/files/1/0434/3264/0674/files/on_chesil_beach.pdf
    • https://cdn.shopify.com/s/files/1/0438/7799/0568/files/hiv_aids_full_information_in_marathi.pdf
    • https://cdn.shopify.com/s/files/1/0435/9438/3522/files/lilosizitetotulin.pdf
    • https://cdn.shopify.com/s/files/1/0430/8110/5562/files/sibunelulexapokixodo.pdf
    • https://static.usrfiles.com/ugd/4e6dd5_d61ebf9bc615402c933ae2040a2f4640.pdf
    • https://static.usrfiles.com/ugd/c0b427_ac6fee7848664256aa6401a850a57b7b.pdf
    • https://static.usrfiles.com/ugd/529dbf_9a61cf9c57e34b9b912dea366a171c37.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_off0000600f.bin
cf22b52d407462b2681cedd0b1cd03db48770b097ccfcbeccba3174c805793d1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x600F 5516 bytes
font_01_sfnt_off000072bf.bin
09e2a2bcf61444745c79154e541221c02788001da0090e3b464eef21bdb59853		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72BF 10420 bytes

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