Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb4bd13d3da74d50…

MALICIOUS

PDF

76.5 KB Created: 2020-08-30 15:27:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 943a76f194f6b3b180e5b590b0342099 SHA-1: 4261d3235d819cfe19990b127d70d5907eea9ae3 SHA-256: bb4bd13d3da74d5045de41c89ac01001f896fc62b8b7718b4b28a6415e418707
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a heuristic firing for a malicious redirector link and a PDF link farm. The document body contains the URL 'https://ttraff.ru/wix?keyword=boy+george+gay+or+straight', which is also flagged as a malicious redirector. This suggests the primary goal is to redirect the user to a malicious site, likely for phishing or malware distribution.

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=boy+george+gay+or+straight
    • https://cdn.shopify.com/s/files/1/0435/9231/9139/files/adjective_phrases_worksheet_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0454/3184/9128/files/tidubizojelilisoduke.pdf
    • https://cdn.shopify.com/s/files/1/0429/6661/4175/files/70920386367.pdf
    • https://cdn.shopify.com/s/files/1/0435/9720/1576/files/33278104210.pdf
    • https://static.usrfiles.com/ugd/36f25b_e5ea9f405c284ca48772b3342e294d0c.pdf
    • https://static.usrfiles.com/ugd/756799_59afc326a4144b0badb827bb4610bbd1.pdf
    • https://cdn.shopify.com/s/files/1/0428/0965/5462/files/bookkeeping_basics_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0435/1646/1211/files/nexofijeninupokirela.pdf
    • https://cdn.shopify.com/s/files/1/0432/0532/9064/files/toguvakonasa.pdf
    • https://cdn.shopify.com/s/files/1/0435/9448/1821/files/kukasiseritibigub.pdf
    • https://cdn.shopify.com/s/files/1/0430/1442/2687/files/algebraic_identities_for_class_10.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_off0000d718.bin
7e1eadc804d8dc83c133eec65514b8767a9adc15a86c5c7d4df1bb61df1c6d80		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD718 4748 bytes
font_01_sfnt_off0000e752.bin
7416c127a09edade7656e81b965e11e8e77ce76433bd517b19f91af4ced72a2c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE752 14764 bytes
font_02_sfnt_off0001158c.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1158C 4324 bytes

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