Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0431aeceedafeeb…

MALICIOUS

PDF

47.3 KB Created: 2020-08-21 23:03:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 826f852c47ea75b84f5e7965279be62e SHA-1: 15a1bbc95d0a8a85d0aa37a0697e1433652f7fea SHA-256: f0431aeceedafeeb9e652381b123110510bb2c14ffeccfa00bb5e612944c0fc7
120 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.com, disguised as a 'dinner invitation template wording'. This suggests a phishing or social engineering attack. The file also contains a large number of embedded links, many pointing to Shopify domains, which is characteristic of SEO link farm abuse. No scripts were extracted, but the primary malicious behavior observed is the redirection to a potentially harmful URL.

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=dinner+invitation+template+wording
    • http://files.savannahbrooklynharrell.com/uploads/1/3/1/3/131398133/90773925ee6.pdf
    • https://cdn.shopify.com/s/files/1/0431/0587/8170/files/shower_water_heater_installation_guide.pdf
    • https://cdn.shopify.com/s/files/1/0433/9191/0038/files/62314805827.pdf
    • https://cdn.shopify.com/s/files/1/0431/0925/3282/files/81714296240.pdf
    • https://cdn.shopify.com/s/files/1/0435/0056/8736/files/aashto_lrfd_2020_espaol.pdf
    • https://cdn.shopify.com/s/files/1/0432/2764/4072/files/77154301007.pdf
    • https://cdn.shopify.com/s/files/1/0429/3243/7158/files/galubisojefazag.pdf
    • https://cdn.shopify.com/s/files/1/0440/8151/2613/files/46606704242.pdf
    • https://cdn.shopify.com/s/files/1/0433/9249/9877/files/noketugepegiweliwuvudiboj.pdf
    • https://cdn.shopify.com/s/files/1/0431/4667/4330/files/understanding_culture_society_and_politics_grade_11.pdf
    • https://cdn.shopify.com/s/files/1/0429/7093/9541/files/83347758512.pdf
    • https://cdn.shopify.com/s/files/1/0433/0645/1094/files/71083169623.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_off00006e71.bin
3d8ceed104846af8be9997b422d3dede4b2f43c89d2eb551407dd600e8fbcbc9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E71 5040 bytes
font_01_sfnt_off00007f91.bin
fddc3e2b66fea043dcb9a7d90d2d604741a69922c666f51f1cacc9d31c1c2cff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F91 10240 bytes
font_02_sfnt_off0000a254.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA254 4324 bytes

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