Malicious PDF — malware analysis report

Static analysis result for SHA-256 473a0dc885c16431…

MALICIOUS

PDF

42.1 KB Created: 2020-08-31 11:21:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 98c48372d16c9f9f15f534f43a9846ed SHA-1: 35b1cc55198a3079d6873ce9e9a226c47427b38f SHA-256: 473a0dc885c16431ca690a7df33f7453315a5170f840ae9625dea47850c642df
150 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/wix?keyword=model+yacht+plans+free+download'. This URL is presented within the document body, suggesting a social engineering lure to trick users into clicking it. The presence of numerous external PDF links, many hosted on cdn.shopify.com, further indicates a link farm designed to distribute malicious content or manipulate search engine results. The ML classifier also strongly flagged this PDF as malicious.

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/wix?keyword=model+yacht+plans+free+download
    • https://static.usrfiles.com/ugd/b8c837_26cc499ca283404f82a3a6fd1d78947c.pdf
    • https://static.usrfiles.com/ugd/b8c837_9c0e9fdcae2349c7a7723f529029c282.pdf
    • https://static.usrfiles.com/ugd/ee9d3f_4ef4b569b9894245b34f908ba9b6689e.pdf
    • https://cdn.shopify.com/s/files/1/0430/9280/3744/files/86609473152.pdf
    • https://cdn.shopify.com/s/files/1/0427/6387/8566/files/dudley_moore_trio_jazz_in_oz.pdf
    • https://cdn.shopify.com/s/files/1/0437/0661/3912/files/xejan.pdf
    • https://cdn.shopify.com/s/files/1/0428/8770/8825/files/11493605968.pdf
    • https://cdn.shopify.com/s/files/1/0437/5481/5640/files/satujegonupuj.pdf
    • https://cdn.shopify.com/s/files/1/0435/5093/3156/files/46699001766.pdf
    • https://cdn.shopify.com/s/files/1/0431/6299/2795/files/91766537063.pdf
    • https://cdn.shopify.com/s/files/1/0459/8949/4951/files/fugijo.pdf
    • https://cdn.shopify.com/s/files/1/0434/1137/4234/files/rutataloj.pdf
    • https://cdn.shopify.com/s/files/1/0427/7462/6470/files/accounting_for_financial_instruments_cormac_butler.pdf
    • https://cdn.shopify.com/s/files/1/0437/3646/5559/files/a_letter_template_for_word.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/
    • https://cdn.shopify.com/s/files/1/0434/1137/4234/files/ruta

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000066c7.bin
bde962823312d8224d23dcbc7850f537ab94e86ec2c9edd7b999257dc9873716		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66C7 5440 bytes
font_01_sfnt_off00007961.bin
8ccd7a7b7bb8ed9f90f8914b1033971d04a8070c581347a71c555bf05797c01b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7961 9896 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.