Malicious PDF — malware analysis report

Static analysis result for SHA-256 43aedfa0d129f6c4…

MALICIOUS

PDF

44.4 KB Created: 2020-08-17 01:01:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 25136bf559bb519660e81147840da332 SHA-1: 37bba7d23336ac1286d314327c7fb28de27cf4e3 SHA-256: 43aedfa0d129f6c4df6290fd1ebd2b8917219b0944e7b411dbf9f1b7cfb8cd2e
130 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to ttraff.cc. The document body, though heavily obfuscated, contains text that appears to be a lure for a 'project funding proposal template pdf'. This link likely leads to a malicious download or further redirection. The presence of numerous external PDF links, many hosted on Shopify, suggests a link farm designed to obscure the ultimate destination.

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.cc/pify?keyword=project+funding+proposal+template+pdf
    • http://files.namiracinecounty.org/uploads/1/3/1/8/131856950/mexuvogo_keduki_sitibupunapab.pdf
    • http://files.pascalletourneau.com/uploads/1/3/1/4/131406036/dc2cffa7.pdf
    • http://files.apaacupuncture.com/uploads/1/3/0/8/130874110/buzimu-bavizewabigofej-sajibevuw-pagusuminetu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9203/4211/files/arvind_mills_annual_report_2017.pdf
    • https://cdn.shopify.com/s/files/1/0435/0902/2886/files/niwovavitepedurelisiva.pdf
    • https://cdn.shopify.com/s/files/1/0440/4012/6614/files/jenukiva.pdf
    • https://cdn.shopify.com/s/files/1/0434/7510/7992/files/cambridge_english_prepare_level_3.pdf
    • https://cdn.shopify.com/s/files/1/0431/4100/5480/files/33328512642.pdf
    • https://cdn.shopify.com/s/files/1/0431/0047/1456/files/gapado.pdf
    • https://cdn.shopify.com/s/files/1/0427/5788/2022/files/26855774808.pdf
    • https://cdn.shopify.com/s/files/1/0452/3986/1408/files/95714935632.pdf
    • https://cdn.shopify.com/s/files/1/0435/5869/9159/files/xcom_2_andromedon.pdf
    • https://cdn.shopify.com/s/files/1/0428/2250/0518/files/50810454614.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_off00007049.bin
f785a7b344d3d378d75c2b85ece43c5fc878832ba659bd53217abad9af86c62c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7049 5552 bytes
font_01_sfnt_off00008319.bin
14fad49b686503b6a63920101e8a8593f02e780d700a6a43a7661435276f8e3c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8319 9932 bytes

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