Malicious PDF — malware analysis report

Static analysis result for SHA-256 aecb0d9a004215d9…

MALICIOUS

PDF

40.9 KB Created: 2020-08-11 13:24:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 83992573d8d369c894f086c67262c672 SHA-1: 7b692d38289ff6e520dc8e883ad05e529bde7ee5 SHA-256: aecb0d9a004215d99a948b34a164ca9926ad31527aeaa21616787e723053514f
128 Risk Score

Malware Insights

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

The PDF file contains a link farm and a malicious redirector, indicating an attempt to lure users to malicious sites. The document body, though heavily obfuscated, contains the URL https://ttraff.com/pify?keyword=business+studies+class+11+pdf+free+download, which is flagged as a malicious redirector. This suggests the document's primary purpose is to facilitate the download of further malicious content or lead users to phishing pages.

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=business+studies+class+11+pdf+free+download
    • http://zemavowa.oaklandmillsonline.com/uploads/1/3/0/7/130776436/4f002fed58.pdf
    • http://files.premoderndiplomats.org/uploads/1/3/2/8/132814250/2994152.pdf
    • http://files.elizamaleckidance.com/uploads/1/3/0/7/130775228/af16b9c4.pdf
    • http://solur.intothewildlife.org/uploads/1/3/1/4/131437508/3233590.pdf
    • https://cdn.shopify.com/s/files/1/0436/5893/6473/files/alhambra_zip_code.pdf
    • https://cdn.shopify.com/s/files/1/0433/8037/5704/files/jodiwoturijotonudonugirib.pdf
    • https://cdn.shopify.com/s/files/1/0432/7197/9171/files/63783339943.pdf
    • https://cdn.shopify.com/s/files/1/0431/6469/6738/files/8847881623.pdf
    • https://cdn.shopify.com/s/files/1/0432/0650/8701/files/viwujigotasumirone.pdf
    • https://cdn.shopify.com/s/files/1/0434/0151/1064/files/25312765094.pdf
    • https://cdn.shopify.com/s/files/1/0430/8808/5145/files/28025048221.pdf
    • https://cdn.shopify.com/s/files/1/0434/3519/6566/files/tulitufudurozasipivenupi.pdf
    • https://cdn.shopify.com/s/files/1/0428/1060/5735/files/calendario_2020_escolar_mexico.pdf
    • https://cdn.shopify.com/s/files/1/0433/8765/0211/files/vezokinojasa.pdf
    • https://cdn.shopify.com/s/files/1/0430/8631/5682/files/ripifapa.pdf
    • https://cdn.shopify.com/s/files/1/0439/1138/1147/files/cub_cadet_1000_series_service_manual.pdf
    • https://cdn.shopify.com/s/files/1/0438/7130/5896/files/99191018234.pdf
    • https://cdn.shopify.com/s/files/1/0430/8015/5290/files/17148553222.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_off00006196.bin
66752024b97c19088621168dff1a32f29fb5c681bfd575747f61a547c6a82228
pdf-font-stream PDF embedded font (sfnt) at offset 0x6196 5344 bytes
font_01_sfnt_off000073e4.bin
54f1bd6c90dde4c05fc93bee5d086ef50e51916f7b3dcf522ab9e379a0133ddb
pdf-font-stream PDF embedded font (sfnt) at offset 0x73E4 10076 bytes