Malicious PDF — malware analysis report

Static analysis result for SHA-256 de07af3a06a734c2…

MALICIOUS

PDF

34.5 KB Created: 2020-08-04 23:29:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4f79169d9dd7962ef54eb4c93fd3bfcf SHA-1: e1f113c25e52b4ac1db3bd3ef943cea3dab012d9 SHA-256: de07af3a06a734c260affc7d4b61f1a81817ca806977e276df75dc1dde9158c7
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to ttraff.com. The document body, though heavily obfuscated, contains text suggesting a lure related to a 'usf campus map pdf'. The presence of numerous embedded links, many hosted on Shopify, indicates a link farm strategy to obscure the ultimate destination. The primary malicious URL is ttraff.com, which likely serves as a gateway 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.com/pify?keyword=usf+campus+map+pdf
    • http://files.kristynlanggundlach.com/uploads/1/3/1/0/131070702/laloloxepifo.pdf
    • http://files.prmueller.co.uk/uploads/1/3/0/7/130739835/kiduzabamarite.pdf
    • http://files.laurainthelibrary.com/uploads/1/3/0/8/130814258/bumurorulujixevibo.pdf
    • https://cdn.shopify.com/s/files/1/0434/0318/2243/files/bizekejan.pdf
    • https://cdn.shopify.com/s/files/1/0432/7122/5494/files/39829396984.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/7868051279.pdf
    • https://cdn.shopify.com/s/files/1/0431/4251/2802/files/nomeboxamejuzuvoxilinu.pdf
    • https://cdn.shopify.com/s/files/1/0437/3646/5559/files/kepijifubezusajesuravu.pdf
    • https://cdn.shopify.com/s/files/1/0433/8001/5271/files/68127432856.pdf
    • https://cdn.shopify.com/s/files/1/0432/6991/4782/files/nazomimajelemeleze.pdf
    • https://cdn.shopify.com/s/files/1/0432/8544/6824/files/gutanibowefovutoze.pdf
    • https://cdn.shopify.com/s/files/1/0429/8201/5135/files/5329631878.pdf
    • https://cdn.shopify.com/s/files/1/0432/6916/1110/files/titebifafefewavupus.pdf
    • https://cdn.shopify.com/s/files/1/0437/3974/2359/files/kenosuzenavaguvatugefowoz.pdf
    • https://cdn.shopify.com/s/files/1/0431/3415/6967/files/nufujokivusijasemizak.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_off00004b05.bin
08c4350627b20971025eaba6467a5f8828ec1ffe94fbfd3c756cc15df1751712		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4B05 5164 bytes
font_01_sfnt_off00005c8e.bin
4097b6b18f0fc4ac9cb19ed925cc598d9c34694c98dadd089588d0e997b818a7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C8E 9856 bytes

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