Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7bd4cbe48197be9…

MALICIOUS

PDF

43.6 KB Created: 2020-08-23 04:23:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1d1dfb58c0c362a566bd968d528277cc SHA-1: 529ce0c4341874d5c97d26895307b7b8eddca1fb SHA-256: f7bd4cbe48197be9722c979b77627270d223ca9807e1f70e1c23cbfcdac038a4
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1204.001 Malicious Link T1059.001 Command and Scripting Interpreter: PowerShell

The PDF file contains a malicious redirector link disguised as a download button, aiming to lure users to a malicious site. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=lesson+plan+template+au' which is flagged as a known malicious redirector. Additionally, the PDF exhibits characteristics of a link farm, with numerous external links, many pointing to Shopify domains, likely for SEO manipulation or to obscure the final malicious destination.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=lesson+plan+template+au
    • http://wipalo.thriveflinthills.com/uploads/1/3/1/3/131398404/7900712.pdf
    • https://cdn.shopify.com/s/files/1/0427/6020/8540/files/87609315067.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nidosavexurirevinuno.pdf
    • https://cdn.shopify.com/s/files/1/0435/8907/5102/files/vitesesagakalibekuveke.pdf
    • https://cdn.shopify.com/s/files/1/0439/8150/4670/files/kativokexubilifipeb.pdf
    • https://cdn.shopify.com/s/files/1/0437/0097/7818/files/taha_operations_research.pdf
    • https://cdn.shopify.com/s/files/1/0434/9450/6661/files/86048038555.pdf
    • https://cdn.shopify.com/s/files/1/0428/8148/2919/files/80571515780.pdf
    • https://cdn.shopify.com/s/files/1/0431/6296/0023/files/nirumawapo.pdf
    • https://cdn.shopify.com/s/files/1/0439/0027/2792/files/rizegogubivafoped.pdf
    • https://cdn.shopify.com/s/files/1/0435/2180/2404/files/bapisajabafomozonagup.pdf
    • https://cdn.shopify.com/s/files/1/0435/3517/1736/files/dobokofamugeraxerogesoset.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_off00007012.bin
5d3acc2a3ff207c6d6846d9436c3635227e16356d382168389cb9462016a4055		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7012 4808 bytes
font_01_sfnt_off0000805a.bin
39b97055a9d2535c4b30f8b4c66a2385ceee12fae622f31cc7044855db4dfe1a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x805A 9964 bytes

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