Malicious PDF — malware analysis report

Static analysis result for SHA-256 44b0d8f9009489b9…

MALICIOUS

PDF

39.6 KB Created: 2020-08-07 23:11:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 44500a80b03f8a660226248c8bff9594 SHA-1: 00197519a32b7e46608689179fc0a646c3aac98e SHA-256: 44b0d8f9009489b9dd86bc84e082ad0f91206157c90299089d1fd92f9d633f88
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing indicating it links to known malicious redirector infrastructure. The document body text, though heavily obfuscated, includes the URL 'https://ttraff.com/pify?keyword=bombay+house+menu+pdf', which is likely intended to lead the user to a malicious site. The file also contains a large number of external PDF links, many hosted on Shopify, suggesting a link farm or SEO poisoning attempt to distribute 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/pify?keyword=bombay+house+menu+pdf
    • http://files.xavieramos.com/uploads/1/3/2/6/132681796/7665267.pdf
    • http://files.upacs.com.au/uploads/1/3/1/6/131606111/rinebugor.pdf
    • http://files.myfiorella.com/uploads/1/3/1/4/131454459/9047495.pdf
    • https://cdn.shopify.com/s/files/1/0431/5480/0796/files/23035153277.pdf
    • https://cdn.shopify.com/s/files/1/0434/7016/0032/files/pdf_bearbeitungs_app_android.pdf
    • https://cdn.shopify.com/s/files/1/0431/6397/5835/files/37113445324.pdf
    • https://cdn.shopify.com/s/files/1/0432/9806/2501/files/13963735554.pdf
    • https://cdn.shopify.com/s/files/1/0427/4916/5734/files/58301039255.pdf
    • https://cdn.shopify.com/s/files/1/0430/6167/4133/files/zubusexilulibozebamofad.pdf
    • https://cdn.shopify.com/s/files/1/0431/8514/3969/files/94993954983.pdf
    • https://cdn.shopify.com/s/files/1/0434/3237/8517/files/99116553250.pdf
    • https://cdn.shopify.com/s/files/1/0430/3860/5461/files/clark_forklift_service_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/9736/6436/files/66418142883.pdf
    • https://cdn.shopify.com/s/files/1/0432/7119/2732/files/altiplano_definicion.pdf
    • https://cdn.shopify.com/s/files/1/0429/8512/8090/files/26898479335.pdf
    • https://cdn.shopify.com/s/files/1/0427/9028/9574/files/long_live_asap_download_free.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_off00005bdb.bin
824666404ee4fc99e1bfb502bab48ca23b6be633eb3142e82bbbf350d13f623d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BDB 5444 bytes
font_01_sfnt_off00006e41.bin
a637fb1455170a1a4a2690e440110bf6edc55b8b1c40b024e33cf3def63444ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E41 10420 bytes

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