Malicious PDF — malware analysis report

Static analysis result for SHA-256 529058ecda92e5fd…

MALICIOUS

PDF

50.8 KB Created: 2020-08-05 09:37:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3f957ac9c8893b974c701e4a463dda64 SHA-1: fb11677e03086f71329eb4c08f9f2eb9adf17d42 SHA-256: 529058ecda92e5fde990df84ea9ea2e77dfeeaf8ec7a070e5e7a7b461d643b2b
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains numerous links, many of which point to external resources, including a known malicious redirector. The document body, though heavily obfuscated, contains the string "Banerji protocol book pdf" and a URL that appears to be the primary lure. This suggests a phishing or social engineering attack aimed at redirecting the user to malicious content. The presence of a malicious redirector link is a strong indicator of malicious intent.

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.cc/pify?keyword=banerji+protocol+book+pdf
    • http://files.machine-analytics.com/uploads/1/3/0/7/130776439/252662.pdf
    • http://files.polonezdancegroup.com/uploads/1/3/2/6/132682787/254af7587.pdf
    • http://files.diamondjleatheroftexas.com/uploads/1/3/2/3/132303261/tosibemugem.pdf
    • http://files.jambandpurist.com/uploads/1/3/0/8/130874257/dixotawexi-zubabakuje.pdf
    • https://cdn.shopify.com/s/files/1/0433/2666/8952/files/jadebemajewovugodipazegi.pdf
    • https://cdn.shopify.com/s/files/1/0431/5915/8946/files/39940007202.pdf
    • https://cdn.shopify.com/s/files/1/0435/3910/3912/files/mosobakuvubana.pdf
    • https://cdn.shopify.com/s/files/1/0428/9167/3763/files/webudetokevoreja.pdf
    • https://cdn.shopify.com/s/files/1/0431/4572/4055/files/tarutovoku.pdf
    • https://cdn.shopify.com/s/files/1/0430/7573/1616/files/joana_alliance_leveling_guide.pdf
    • https://cdn.shopify.com/s/files/1/0430/4846/8631/files/calendario_mundial_rusia_2020_chile.pdf
    • https://cdn.shopify.com/s/files/1/0431/5689/7947/files/94695617526.pdf
    • https://cdn.shopify.com/s/files/1/0434/5187/5494/files/guwomulu.pdf
    • https://cdn.shopify.com/s/files/1/0434/5207/2088/files/padinezepoturorer.pdf
    • https://cdn.shopify.com/s/files/1/0431/2812/7637/files/99059980649.pdf
    • https://cdn.shopify.com/s/files/1/0430/5698/8311/files/bofopipamiziponuloti.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_off00008a19.bin
0b661b5dc1e5433d739a6e89f1b03817124398b904364142a39ad08928db997f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A19 5300 bytes
font_01_sfnt_off00009c2f.bin
aef6febb9935681111fb174a32d1ec5041238de0343f015c4380a3b4ae5d7587		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9C2F 9976 bytes

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