Malicious PDF — malware analysis report

Static analysis result for SHA-256 c20b8f608f75e122…

MALICIOUS

PDF

82.4 KB Created: 2020-08-07 20:52:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 899538c0f396d8fb61a64261fee649ab SHA-1: 07a5e160d2594117fdbe3fcdabd57841b5e3b4f9 SHA-256: c20b8f608f75e1222a48fb61b2a9cb0f12f006042340b707543fd04807fa8332
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a common tactic for SEO spam and redirecting users to malicious sites. One such link, 'https://ttraff.ru/pify?keyword=chromatography+types+notes+pdf', is identified as a malicious redirector. The document body, though heavily obfuscated, contains references to the URL, suggesting it's the primary lure. The file type and heuristic firings strongly indicate a malicious intent to redirect users.

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.ru/pify?keyword=chromatography+types+notes+pdf
    • http://files.annishealinggarden.com.au/uploads/1/3/0/7/130776864/kuxafixogudaruwuje.pdf
    • http://files.pearlsmentoring4girls.org/uploads/1/3/2/7/132740905/jelizobimudit.pdf
    • http://gazalenus.northerntraining.org/uploads/1/3/0/8/130813612/daxotuj.pdf
    • http://lopil.brasasperu.com/uploads/1/3/1/4/131453329/ce628987ff.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xumilegimazuguvabunozanik.pdf
    • https://cdn.shopify.com/s/files/1/0428/6713/0534/files/25927240487.pdf
    • https://cdn.shopify.com/s/files/1/0434/3191/9765/files/water_company_annual_report.pdf
    • https://cdn.shopify.com/s/files/1/0431/8488/1825/files/nilopowesetever.pdf
    • https://cdn.shopify.com/s/files/1/0435/4303/6053/files/tuwepusudekugor.pdf
    • https://cdn.shopify.com/s/files/1/0432/1050/6404/files/dimutadoxuzosigare.pdf
    • https://cdn.shopify.com/s/files/1/0431/9110/7742/files/62539314190.pdf
    • https://cdn.shopify.com/s/files/1/0432/9363/8811/files/fofemegu.pdf
    • https://cdn.shopify.com/s/files/1/0435/2193/3466/files/pazumavamomuvebupu.pdf
    • https://cdn.shopify.com/s/files/1/0429/6556/5589/files/benijanowurokonogobedegus.pdf
    • https://cdn.shopify.com/s/files/1/0438/5089/1424/files/breakthrough_advertising_eugene.pdf
    • https://cdn.shopify.com/s/files/1/0432/1126/0062/files/48444450056.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rinajimakonewob.pdf
    • https://cdn.shopify.com/s/files/1/0432/7958/1352/files/soxelonasaj.pdf
    • https://cdn.shopify.com/s/files/1/0437/9715/1904/files/8263417262.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_off0000e9dc.bin
3217529a91dfa8921cf88248a2c4d53b02e7d5e4698be066d574945f3b7e3fb2
pdf-font-stream PDF embedded font (sfnt) at offset 0xE9DC 5428 bytes
font_01_sfnt_off0000fc2a.bin
cebce435761b01b08d8df151bb5e125a290dbc2e81b1e263b55d7ead0e4cc483
pdf-font-stream PDF embedded font (sfnt) at offset 0xFC2A 12852 bytes
font_02_sfnt_off000126b2.bin
9e4265a29980eb0856412f08a1531ef9bc31f7270d08920f81547b60c48c08f3
pdf-font-stream PDF embedded font (sfnt) at offset 0x126B2 16184 bytes