Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae5a869e2ecd2fcf…

MALICIOUS

PDF

42.2 KB Created: 2020-08-12 00:48:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 75df8ce2957248daafb06d56cb7ee77e SHA-1: c3190dfc8b486609a77f74d2609dafa2eb6a1234 SHA-256: ae5a869e2ecd2fcfbd39a49ed4feae8116e49d5050a80dae859b5f1e9026806e
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 'ttraff.com'. The document body, though heavily obfuscated, contains text related to 'tax incentives' and the malicious URL. The file also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify, likely to improve search engine ranking for malicious content.

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/wb?keyword=types%20of%20tax%20incentives%20pdf
    • http://files.popswoodencreations.com/uploads/1/3/1/3/131380616/kilivuloj.pdf
    • http://files.cromephotography.com/uploads/1/3/0/7/130776673/lotipujaxo-mawizoxorevet.pdf
    • http://dipulubu.listwithearl.com/uploads/1/3/0/8/130874330/7e5cf6d0aa4c46.pdf
    • http://dolivudi.southshoredeckbuilders.com/uploads/1/3/1/4/131438888/f92ff6cd75a0.pdf
    • https://cdn.shopify.com/s/files/1/0435/2652/0987/files/xununipafuzexokasuza.pdf
    • https://cdn.shopify.com/s/files/1/0431/8376/7713/files/neet_chemistry_books_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/3077/2901/files/19367324.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vukabisozudetilo.pdf
    • https://cdn.shopify.com/s/files/1/0454/2988/3048/files/cryogenic_engine_ppt.pdf
    • https://cdn.shopify.com/s/files/1/0432/8338/2427/files/83114447275.pdf
    • https://cdn.shopify.com/s/files/1/0427/9956/2911/files/53881654973.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/61411835552.pdf
    • https://cdn.shopify.com/s/files/1/0433/4416/7064/files/notuju.pdf
    • https://cdn.shopify.com/s/files/1/0430/9254/1589/files/51856152992.pdf
    • https://cdn.shopify.com/s/files/1/0431/2524/4065/files/sesevigalidula.pdf
    • https://cdn.shopify.com/s/files/1/0434/7029/1096/files/how_do_i_update_my_google_chrome.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/91300886864.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_off000065e0.bin
a4d977f96fd0c81461f8a62884303f9dd7f7486c1838780e1408ff6c01313544		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65E0 5200 bytes
font_01_sfnt_off000077b3.bin
ddc8aaa62869949376b2513a838de5dd9933082c38bf4ddd2c75582b594f93b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77B3 10796 bytes

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