Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4f3c19c03504bfe…

MALICIOUS

PDF

44.3 KB Created: 2020-08-18 14:55:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6a27d6980756c19700aee224fb1a35d0 SHA-1: a202cc413a355f963464d04a8f9bb5737cc236ee SHA-256: e4f3c19c03504bfea8edd14443544961f25032cf9b58e1cb3bec26d2c9bca75d
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, specifically pointing to 'https://ttraff.com/pify?keyword=minority+report+short+story+online'. This indicates the document's primary purpose is to redirect users to potentially harmful content. Additionally, the PDF exhibits characteristics of a link farm, embedding numerous external links, many of which point to Shopify domains hosting other PDFs. The document body, though heavily obfuscated, also contains the primary malicious URL.

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=minority+report+short+story+online
    • http://runapu.shoultesparkhoa.com/uploads/1/3/1/3/131383483/zumutun.pdf
    • http://files.schnepfsveggiedrivethru.com/uploads/1/3/0/9/130969818/favonubuk.pdf
    • http://files.artisanoutdoorok.com/uploads/1/3/0/7/130776763/wogisubixasuxuzir.pdf
    • https://cdn.shopify.com/s/files/1/0428/4937/0268/files/44814705596.pdf
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/91894720033.pdf
    • https://cdn.shopify.com/s/files/1/0432/4671/5040/files/29756890765.pdf
    • https://cdn.shopify.com/s/files/1/0431/7518/2496/files/mupij.pdf
    • https://cdn.shopify.com/s/files/1/0434/9358/9142/files/kadelivamibomef.pdf
    • https://cdn.shopify.com/s/files/1/0433/0828/6105/files/25537971890.pdf
    • https://cdn.shopify.com/s/files/1/0431/8353/8331/files/tezakaxoxepowakepufo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zutazalurofesavasa.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/32829552166.pdf
    • https://cdn.shopify.com/s/files/1/0435/8832/1437/files/zifewopozis.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_off00007035.bin
b7a7ab9d5247bc0b0f1c01441c0b32e7c6364d73452ec23f77a26796aee1fb8d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7035 4804 bytes
font_01_sfnt_off00008095.bin
1df47b5c41e83ba37d7bf92a31116a30e180201e3241dd4416314afaea7491dc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8095 10552 bytes

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