Malicious PDF — malware analysis report

Static analysis result for SHA-256 977085942764d4af…

MALICIOUS

PDF

38.6 KB Created: 2020-08-03 21:52:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4e2ae9003915c1e5927ba562dbf06d1e SHA-1: af6bbe229078673eff3bc1aa9bf1a5e4aa13dcdb SHA-256: 977085942764d4af7a2b55193e54efe506c5efb003e4c19ad0e1568e604defec
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 'ttraff.cc'. The document body, though heavily obfuscated, contains the same URL and a series of benign-looking PDF links hosted on Shopify, likely as a distraction or to appear legitimate. The primary malicious intent appears to be redirecting the user to the 'ttraff.cc' URL, which is known to host 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.cc/pify?keyword=present+continuous+tense+worksheets+with+answers+pdf
    • http://files.lukasstanley.com/uploads/1/3/1/4/131438180/5bb0b24.pdf
    • http://files.wintercreekwildlifeartunlimited.com/uploads/1/3/2/6/132683137/tevaxewivosim-varom-gomitubupil.pdf
    • http://files.mobadanceacademyus.com/uploads/1/3/0/7/130739202/4403828.pdf
    • https://cdn.shopify.com/s/files/1/0432/4248/7972/files/xofatopuvibinenidap.pdf
    • https://cdn.shopify.com/s/files/1/0431/7741/0720/files/4122610163.pdf
    • https://cdn.shopify.com/s/files/1/0428/3446/0828/files/10262691234.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nagexonulelaxefirulilona.pdf
    • https://cdn.shopify.com/s/files/1/0431/1993/5655/files/xapop.pdf
    • https://cdn.shopify.com/s/files/1/0434/3064/1826/files/95637820123.pdf
    • https://cdn.shopify.com/s/files/1/0428/1381/6995/files/80556375312.pdf
    • https://cdn.shopify.com/s/files/1/0439/3834/9211/files/the_strain_trilogy.pdf
    • https://cdn.shopify.com/s/files/1/0428/5513/7447/files/24897387674.pdf
    • https://cdn.shopify.com/s/files/1/0435/8730/5629/files/kibemedekiganorefozojow.pdf
    • https://cdn.shopify.com/s/files/1/0440/2439/7989/files/7334839442.pdf
    • https://cdn.shopify.com/s/files/1/0432/9639/1323/files/nimavidumam.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_off000057d1.bin
cc2dd72ee742cc17948b41d8e7d97168a08a9c7bcbc9417192485275e60b87c6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57D1 5368 bytes
font_01_sfnt_off00006a24.bin
a7d6d42c75b0f34c0a0bf751825512f7c21c68cf6ebbe8f13f0e173db7712407		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A24 10336 bytes

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