Malicious PDF — malware analysis report

Static analysis result for SHA-256 f4b828064da9195c…

MALICIOUS

PDF

42.8 KB Created: 2020-08-14 22:11:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 90a9de69b96fba3407c1a41fc000d006 SHA-1: 45dd8a5edd17a4335a46e5e39fc7685b6a066cb5 SHA-256: f4b828064da9195c29f6ac932ae4c1f81910a618ec5da14e4d2b2c7de01ff67e
120 Risk Score

Malware Insights

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

The PDF contains a link that redirects to malicious infrastructure, disguised as a Dota 2 guide. The document body and embedded URLs indicate a lure to a redirector. The PDF also contains a link farm, suggesting an attempt to manipulate search engine results to distribute 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.com/pify?keyword=dota+2+invoker+advanced+guide
    • http://files.nadafaris.com/uploads/1/3/1/4/131406606/3150919.pdf
    • https://cdn.shopify.com/s/files/1/0433/0268/2789/files/sajefe.pdf
    • https://cdn.shopify.com/s/files/1/0428/7463/4403/files/dipotetanavitezopofu.pdf
    • https://cdn.shopify.com/s/files/1/0432/0903/1840/files/wifokazunuzazuna.pdf
    • https://cdn.shopify.com/s/files/1/0431/3861/3399/files/49610648825.pdf
    • https://cdn.shopify.com/s/files/1/0431/3032/3095/files/unidades_de_almacenamiento_de_datos.pdf
    • https://cdn.shopify.com/s/files/1/0431/3251/8555/files/75016137152.pdf
    • https://cdn.shopify.com/s/files/1/0432/0657/4238/files/nubolaxe.pdf
    • https://cdn.shopify.com/s/files/1/0431/0161/8330/files/vascular_dementia_treatment.pdf
    • https://cdn.shopify.com/s/files/1/0431/1144/8727/files/font_point_size_chart.pdf
    • https://cdn.shopify.com/s/files/1/0429/8244/1113/files/67620771115.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/69440205977.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_off00006b4d.bin
f10222100e3d80a678f0fe09459bb25bcd15d16f8320b9c10699b44c37a0f57d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B4D 5152 bytes
font_01_sfnt_off00007ced.bin
216d29b85dbef9c38bc9e0b78f26057a790b6463c7436ee2158a1588d9a7fcd5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CED 9816 bytes

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