Malicious PDF — malware analysis report

Static analysis result for SHA-256 2239293d110ea002…

MALICIOUS

PDF

48.6 KB Created: 2020-08-28 01:41:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c1a1560ddfb18c0200b2192532c07369 SHA-1: abdd16ceda18f83dbe7c93071a7756eaec08b634 SHA-256: 2239293d110ea0022b696f2772bb7f55d7ed1066cbc6ae2f74c4d99a4c0a6480
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service (ttraff.cc) that is known to host malicious content. The document body, though heavily garbled, contains the same suspicious URL. The presence of a link farm and a malicious redirector suggests a phishing or malware distribution attempt. No scripts were extracted, limiting the analysis of specific execution techniques.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=c%25C3%25A1ch+l%25C3%25A0m+nhi%25E1%25BB%2587m+v%25E1%25BB%25A5+thi%25C3%25AAn+m%25C3%25B4n+tr%25E1%25BA%25ADn+vl2
    • http://nafegilar.shannonkerseytherapist.com/uploads/1/3/0/8/130814328/a574afb18.pdf
    • http://satarome.rosytoesdesigns.com/uploads/1/3/1/4/131437778/8fdcdf8.pdf
    • https://cdn.shopify.com/s/files/1/0432/9819/3573/files/bwv_1066.pdf
    • https://cdn.shopify.com/s/files/1/0429/3338/7423/files/adorno_horkheimer_culture_industry.pdf
    • https://cdn.shopify.com/s/files/1/0427/4189/1238/files/fimusezujatajoripizan.pdf
    • https://cdn.shopify.com/s/files/1/0440/3268/8293/files/superfighters_deluxe_2_player_downlo.pdf
    • https://cdn.shopify.com/s/files/1/0440/6696/3621/files/vegilubafisujivexefeforen.pdf
    • https://cdn.shopify.com/s/files/1/0432/7335/5424/files/lamegijunifixifajobamuse.pdf
    • https://cdn.shopify.com/s/files/1/0433/1238/2117/files/39859363551.pdf
    • https://cdn.shopify.com/s/files/1/0430/4686/3005/files/42128254863.pdf
    • https://cdn.shopify.com/s/files/1/0429/6795/7660/files/12882243690.pdf
    • https://cdn.shopify.com/s/files/1/0432/3042/9352/files/27173836324.pdf
    • https://cdn.shopify.com/s/files/1/0435/4431/4011/files/texegogozefizu.pdf
    • https://cdn.shopify.com/s/files/1/0432/4183/2615/files/87752890120.pdf
    • https://cdn.shopify.com/s/files/1/0431/7275/7668/files/65559407879.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000647b.bin
39e500098c3fd88b60eb2d4ea7e6bd5a90858d830f2e9a7bc72b5ab30b4d30ea
pdf-font-stream PDF embedded font (sfnt) at offset 0x647B 3324 bytes
font_01_sfnt_off00007073.bin
f98a634b41c910111f729ef0d8d01f1fa8c461f34de843aa1f5416de358e25fb
pdf-font-stream PDF embedded font (sfnt) at offset 0x7073 6040 bytes
font_02_sfnt_off00008272.bin
5c32f5c18aab86921bb5637a9294f5547c793b91f84eaf685998cb23546b6c0e
pdf-font-stream PDF embedded font (sfnt) at offset 0x8272 22496 bytes