Malicious PDF — malware analysis report

Static analysis result for SHA-256 26709965ef24aa4e…

MALICIOUS

PDF

43.9 KB Created: 2020-08-10 16:07:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8628a174119780d30f48469fbf9ec89f SHA-1: 025247b5b08b4c0c3f682758a4ac557ec39c334f SHA-256: 26709965ef24aa4e790af2c6cefc54eab6da633a5ef3d8a395593b65b5434f40
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external PDFs hosted on various domains, including a known malicious redirector. The primary malicious link is https://ttraff.com/pify?keyword=curriculum+development+in+pakistan+book+pdf, which is designed to redirect users to potentially harmful content. The document body is heavily obfuscated but contains references to the malicious URL and other PDF links.

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/pify?keyword=curriculum+development+in+pakistan+book+pdf
    • http://files.decaldenn.com/uploads/1/3/1/8/131871687/vefekajeporir.pdf
    • http://nezodeno.wcmasterspolo.com/uploads/1/3/0/7/130776445/7de452ff78.pdf
    • http://files.tomsaundersart.com/uploads/1/3/1/0/131071067/1757720.pdf
    • http://xireb.eyezone.com.sg/uploads/1/3/1/6/131606490/18ca2.pdf
    • https://cdn.shopify.com/s/files/1/0435/3936/6047/files/maths_formulas_for_bank_exams.pdf
    • https://cdn.shopify.com/s/files/1/0437/3626/8949/files/starbucks_brand_guidelines_2020.pdf
    • https://cdn.shopify.com/s/files/1/0428/6975/1967/files/gaxogizoga.pdf
    • https://cdn.shopify.com/s/files/1/0431/7387/1767/files/react_fetch_bind_this.pdf
    • https://cdn.shopify.com/s/files/1/0441/3833/2312/files/widivutojudoxomerukix.pdf
    • https://cdn.shopify.com/s/files/1/0429/9243/5359/files/sipijuwilupimitudosi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/69892687871.pdf
    • https://cdn.shopify.com/s/files/1/0436/2692/2146/files/fimegara.pdf
    • https://cdn.shopify.com/s/files/1/0431/7511/6964/files/15840967605.pdf
    • https://cdn.shopify.com/s/files/1/0434/3899/7669/files/70680658995.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_off00006e19.bin
87daedb9ab8a0e9faf0907c3c920384ac135edac6b7e9606d957a522af400fee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E19 5468 bytes
font_01_sfnt_off00008092.bin
ea719d629119dc17ac54eaca3d3e0f7257ca08412031a06eed058a8c50f224ca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8092 9944 bytes

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