Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e625e2bf81e7391…

MALICIOUS

PDF

48.3 KB Created: 2020-08-03 10:00:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 063fd5bce6ced05d60e823f91f42b680 SHA-1: 9e48f3fd30922b3cca9e29cb6d5d7dcea0df7080 SHA-256: 2e625e2bf81e7391713c0ac69eb31d7e19df521e03df75b88783d2f54aa5237f
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF was flagged as malicious due to a high number of embedded links, a common technique for SEO spam or redirecting users to malicious sites. One critical heuristic identified a link to known malicious redirector infrastructure at 'https://ttraff.cc/pify?keyword=d%2526+d+5e+playable+races'. The document body contains garbled text and embedded URLs, further supporting the malicious intent. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.cc/pify?keyword=d%2526+d+5e+playable+races
    • http://files.artbycynthiawebb.com/uploads/1/3/1/1/131164308/lowigezoredobegafe.pdf
    • http://files.mfolatx.org/uploads/1/3/1/3/131380008/naxaduvirujo.pdf
    • http://files.atticus-guidance.com/uploads/1/3/0/8/130874122/xafiliwunivebi_lunaliserijadu_jurokixo_mejeligidari.pdf
    • https://cdn.shopify.com/s/files/1/0431/7741/0720/files/lakitiboxidofekonu.pdf
    • https://cdn.shopify.com/s/files/1/0432/4209/4755/files/8402261744.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/5676577217.pdf
    • https://cdn.shopify.com/s/files/1/0428/6405/0332/files/force_restart_macbook_pro.pdf
    • https://cdn.shopify.com/s/files/1/0427/8507/9452/files/dogijufa.pdf
    • https://cdn.shopify.com/s/files/1/0429/4190/7100/files/crime_scene_report_form.pdf
    • https://cdn.shopify.com/s/files/1/0431/7508/4193/files/50873362774.pdf
    • https://cdn.shopify.com/s/files/1/0431/5722/5638/files/pca_in_r.pdf
    • https://cdn.shopify.com/s/files/1/0428/4815/7859/files/jekugafi.pdf
    • https://cdn.shopify.com/s/files/1/0431/9890/6528/files/lugatirodosasire.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/86593634255.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_off000082d6.bin
278cac2e78d1b4950b7c4295bc4000fde350c7c8fc6a349bfdf9917f5098d62c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82D6 4156 bytes
font_01_sfnt_off00009105.bin
1b9d498339239bb81bd788f500d45e76e320bf46e13600e3ce93cb1c2b50c569		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9105 10540 bytes

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