Malicious PDF — malware analysis report

Static analysis result for SHA-256 49d18125abb15118…

MALICIOUS

PDF

37.9 KB Created: 2020-08-04 16:47:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a4c48e353eb2ae8724fb0727db747c24 SHA-1: 2984ef3de018e0b63e1339d97f5d1f66982321ad SHA-256: 49d18125abb151189b408f97fc98021e67cc9e5f604147a2e66afe331ec57ff0
128 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a 'VCF file to PDF converter online' tool. This link, `https://ttraff.com/pify?keyword=vcf+file+to+pdf+converter+online`, is designed to lure users into clicking it, likely leading to a malicious download or further compromise. The document also exhibits characteristics of a link farm, with numerous embedded URLs pointing to various PDF files, suggesting an attempt to manipulate search engine results or distribute content through multiple hosts.

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=vcf+file+to+pdf+converter+online
    • http://files.wildwiscwinterweb.com/uploads/1/3/2/6/132695388/387be4353f3495.pdf
    • http://files.eatdelirium.com/uploads/1/3/1/4/131455463/fubigafa_newak.pdf
    • http://tivewud.norwoodhighschool.net/uploads/1/3/0/8/130874058/wuzuxenajivan.pdf
    • http://files.honeyspringsfarm.net/uploads/1/3/1/3/131382590/5b4b4a6ea363a0.pdf
    • https://cdn.shopify.com/s/files/1/0437/0428/7383/files/94798367106.pdf
    • https://cdn.shopify.com/s/files/1/0428/8957/6601/files/vebiwavimanowimiwivino.pdf
    • https://cdn.shopify.com/s/files/1/0439/3399/1080/files/virtualbox_shared_folder_ubuntu.pdf
    • https://cdn.shopify.com/s/files/1/0429/8512/8090/files/sanusas.pdf
    • https://cdn.shopify.com/s/files/1/0429/5114/7679/files/bipisinebuburiroxopogo.pdf
    • https://cdn.shopify.com/s/files/1/0431/8108/0738/files/vuxogokil.pdf
    • https://cdn.shopify.com/s/files/1/0431/8891/2290/files/danomomaludagunamal.pdf
    • https://cdn.shopify.com/s/files/1/0433/3653/2136/files/temalizemufinete.pdf
    • https://cdn.shopify.com/s/files/1/0431/4886/9786/files/60713366882.pdf
    • https://cdn.shopify.com/s/files/1/0435/8114/5243/files/schwinn_missle_fs.pdf
    • https://cdn.shopify.com/s/files/1/0432/9832/4638/files/ninuxoxeramesitas.pdf
    • https://cdn.shopify.com/s/files/1/0435/4863/9391/files/future_perkys_calling_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/18410569865.pdf
    • https://cdn.shopify.com/s/files/1/0433/1179/2286/files/california_dmv_test_questions_and_answers_2020.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_off0000564b.bin
ba8be04d44f68f2b26c849d47f7486f605b3315c894f985e09b6bc55f291fb79
pdf-font-stream PDF embedded font (sfnt) at offset 0x564B 4784 bytes
font_01_sfnt_off000066b1.bin
e759107aa4a743e41bd7646520af0e87125eab7fbd90fa69340aefd0a04b10a6
pdf-font-stream PDF embedded font (sfnt) at offset 0x66B1 10672 bytes