Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd9422cc1aa25dcf…

MALICIOUS

PDF

41.0 KB Created: 2020-08-30 17:48:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 00c79070e01add404d8c69f6c78a3799 SHA-1: 68c83b42504cc00aa284b06baabd76a3c74f59fa SHA-256: cd9422cc1aa25dcfb01c4c151558565e0c29d77af24de1cabf65f98b5005a21f
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 large number of embedded links, indicative of an SEO spam or phishing campaign. The primary malicious URL identified is ttraff.ru, which likely serves as a redirector to further malicious content. The document body contains obfuscated text and URLs, further supporting the malicious intent.

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.ru/wix?keyword=soul+by+soul+walter+johnson
    • https://cdn.shopify.com/s/files/1/0431/3654/9018/files/dopilikejavojefuzidenulo.pdf
    • https://cdn.shopify.com/s/files/1/0428/1466/8959/files/13044687805.pdf
    • https://cdn.shopify.com/s/files/1/0451/4054/1593/files/dorajazovudit.pdf
    • https://cdn.shopify.com/s/files/1/0432/8544/6824/files/4234306385.pdf
    • https://static.usrfiles.com/ugd/b8c837_805e221dfd6a40e4951b39cd64c7af27.pdf
    • https://static.usrfiles.com/ugd/3cb679_159dc835dd954a21a84aacf3bac74189.pdf
    • https://static.usrfiles.com/ugd/2e4eb4_c6bfecc2947a4da0995e4cd091e18b26.pdf
    • https://static.usrfiles.com/ugd/b8c837_50fe07e373a0420ba5914f87ef2ddba0.pdf
    • https://static.usrfiles.com/ugd/7f16bd_940d715a50bc488aa8e224414fc09c4a.pdf
    • https://static.usrfiles.com/ugd/b8c837_baae0ff5563447b0846508726b71a5b3.pdf
    • https://static.usrfiles.com/ugd/b8c837_2d96980ea4e847a6a7880b82de79ca64.pdf
    • https://cdn.shopify.com/s/files/1/0430/6288/6554/files/88617883772.pdf
    • https://cdn.shopify.com/s/files/1/0438/6376/9243/files/logical_reasoning_test_2.pdf
    • https://cdn.shopify.com/s/files/1/0429/5350/6969/files/gunsmithing_books.pdf
    • https://cdn.shopify.com/s/files/1/0434/2900/3416/files/jozojavonamakaminisor.pdf
    • https://cdn.shopify.com/s/files/1/0432/1722/3847/files/whatsapp_update_application.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_off000061d6.bin
6fc908bde3e0a605dc85e0a801ebbdb2d0ac118a818ee39f149790d5c415d921		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61D6 5284 bytes
font_01_sfnt_off000073d7.bin
cf3a87a7f22fef1e42b0a4467033e7aea85c87b84273069bc7345223ee0bb33e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73D7 10304 bytes

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