Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ce4d77cfaa2cea1…

MALICIOUS

PDF

46.5 KB Created: 2020-09-19 19:11:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 039b4afcd565c6dde7c2627acb7e4336 SHA-1: 044b5e61887d35f7b2f1b39730aa1f8cb4825a8b SHA-256: 4ce4d77cfaa2cea1866a82a2c4ef0627a762f9579c7be99b4b4561ab34ff8389
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple critical heuristics for containing malicious redirector links and a link farm. The embedded links, such as 'https://ttraff.me/wix?keyword=dark+souls+timeline+games', are likely designed to lure users to malicious sites. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the sheer volume of outbound links suggests a delivery or phishing attempt.

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.me/wix?keyword=dark+souls+timeline+games
    • http://files.stjamesbands.com/uploads/1/3/0/9/130969373/2502521.pdf
    • http://files.canineconciergeservices.com/uploads/1/3/0/8/130873715/kimifesozosepe.pdf
    • http://bumujav.gogroweducationalconsultingtutoring.com/uploads/1/3/2/6/132695643/1727642.pdf
    • http://tufuza.letsgrowfarmshawaii.com/uploads/1/3/0/8/130814328/kivorufirid-kitir-filulasex-bakimu.pdf
    • https://1f99cec0-57b2-4600-b668-c70305ce2c1d.filesusr.com/ugd/8a9bcc_c9abef2e063f473ca82dd5e36f8d5378.pdf?index=true
    • https://68510aa8-27a3-47f8-8b00-b16523d17619.filesusr.com/ugd/9757e7_25f1cb1b37b74af6b113fbd813962725.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0431/6227/1898/files/nescafe_cappuccino_nutritional_information.pdf
    • https://cdn.shopify.com/s/files/1/0433/5108/1114/files/minecraft_steve_flossing_gif.pdf
    • https://cdn.shopify.com/s/files/1/0440/7122/3446/files/devathai_vamsam_neeyo_song_download.pdf
    • https://cdn.shopify.com/s/files/1/0435/8569/9997/files/ecological_succession_webquest.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_off000079c6.bin
cef5998e8ebba41d41daaac8ab422dc93bfa8fbfdb956544d62d2d2d68c7370c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79C6 5068 bytes
font_01_sfnt_off00008af8.bin
f87a8ea6093945ba4820b3b5258ce90a8aed6ae66bb1b3fc21b84457168785b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8AF8 10144 bytes

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