Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc432b70a5f35cac…

MALICIOUS

PDF

37.2 KB Created: 2020-08-16 22:55:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6d41e56e9e9577da1db3f6ec212d8468 SHA-1: 408708f3e9e9d4ccf195794793f3145174d93e80 SHA-256: fc432b70a5f35cac78d23f86ebe1d2abaf82e60f7fe3aaff061687fa0ae2b886
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a redirector service. The document body, though heavily obfuscated, contains text related to 'formal dress hire' and the malicious URL. This suggests a phishing or scam attempt, likely using SEO techniques to attract victims. The primary malicious IOC is the redirector URL, which likely leads to further malicious content.

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=formal+dress+hire+christchurch+nz
    • http://files.jiricreative.com/uploads/1/3/1/6/131606257/vizamazezax.pdf
    • http://kazesesa.tesagomusical.com/uploads/1/3/2/8/132815806/1399910.pdf
    • https://cdn.shopify.com/s/files/1/0436/3023/1712/files/vinevobevodes.pdf
    • https://cdn.shopify.com/s/files/1/0434/2992/0930/files/33848327828.pdf
    • https://cdn.shopify.com/s/files/1/0438/2490/6400/files/54184341687.pdf
    • https://cdn.shopify.com/s/files/1/0432/0083/9842/files/90068603106.pdf
    • https://cdn.shopify.com/s/files/1/0436/5346/4214/files/52006082757.pdf
    • https://cdn.shopify.com/s/files/1/0434/6960/2978/files/72589996750.pdf
    • https://cdn.shopify.com/s/files/1/0443/5968/0156/files/verifica_analisi_logica_scuola_primaria.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_off000043e3.bin
4a803dcaa8c3b0b8da8250ad5e473b9ba3d7ed138f1fb8c3072015cbf3044d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x43E3 5184 bytes
font_01_sfnt_off00005559.bin
4b4b83c1ee4381310d2f27134cbeb87e3adc1f554244159b007e37e47e51ce9d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5559 3804 bytes
font_02_sfnt_off0000644f.bin
204fc4318c2fe497b784e39e9b7dcbac551a066b267648385b47221c5af9fdf3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x644F 10452 bytes

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