Malicious PDF — malware analysis report

Static analysis result for SHA-256 484ab6d9fca146f9…

MALICIOUS

PDF

39.7 KB Created: 2020-08-15 07:19:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fdcdf3b518d207cbcf9c123f4db7c574 SHA-1: 28579b104296f15be460028b5cb188a79828e62f SHA-256: 484ab6d9fca146f97c7752cd1c136c7635d15df79b680a2bc6b5d340afd7479a
128 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 'https://ttraff.com/pify?keyword=breakfast+menu+template+pdf'. The document body, though heavily obfuscated, appears to contain this URL and other Shopify URLs, suggesting a link farm or lure. The presence of a 'download button' heuristic further supports the idea that the document is designed to trick users into clicking malicious links, likely leading to further malware download or phishing.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=breakfast+menu+template+pdf
    • http://files.erni.edu.pl/uploads/1/3/1/3/131380889/wuxinedisolox.pdf
    • http://dajabama.cityofgracemobile.org/uploads/1/3/1/4/131482853/5723532.pdf
    • http://files.awarenessofnothing.com/uploads/1/3/1/4/131453588/00761.pdf
    • http://xuris.vinsvinos.com/uploads/1/3/1/4/131453870/a541fd6c3.pdf
    • https://cdn.shopify.com/s/files/1/0440/6562/0118/files/tegotaxepag.pdf
    • https://cdn.shopify.com/s/files/1/0439/3864/4123/files/how_to_write_fiction_book.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sovir.pdf
    • https://cdn.shopify.com/s/files/1/0440/7102/6853/files/edit_text_free_software.pdf
    • https://cdn.shopify.com/s/files/1/0431/8602/8708/files/tipos_de_energia.pdf
    • https://cdn.shopify.com/s/files/1/0429/8512/8090/files/poor_economics_abhijit_banerjee_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/3770/4867/files/deep_ecology_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0427/7056/3239/files/18762909593.pdf
    • https://cdn.shopify.com/s/files/1/0440/2964/0854/files/watch_american_reunion_online.pdf
    • https://cdn.shopify.com/s/files/1/0429/1257/9747/files/59135267683.pdf
    • https://cdn.shopify.com/s/files/1/0429/9181/2767/files/83401456794.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_off00005e75.bin
02ad94c9cc9b48b0da2d9528a2b76223dfa73e5402f2595db732edc189c58c1b
pdf-font-stream PDF embedded font (sfnt) at offset 0x5E75 5300 bytes
font_01_sfnt_off00007064.bin
cdc9f1a75a377a590414a207808b1a646591afd533bb77df4f17497e495c5d50
pdf-font-stream PDF embedded font (sfnt) at offset 0x7064 9884 bytes