Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff39fdc9a96314d0…

MALICIOUS

PDF

41.1 KB Created: 2020-08-30 01:49:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b6b1c52f96923b260de6ab602f15c7fb SHA-1: 62eae76939a40c578825fe8fa548d2d78bb2f418 SHA-256: ff39fdc9a96314d064c02eb1f075a41beb959937692982e7396b53c8922cada6
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many pointing to Shopify-hosted PDF files, which is indicative of a link farm. One of the primary links, ttraff.ru, is flagged as a malicious redirector. The ML classifier also strongly flagged this PDF as malicious. The document body contains garbled text but includes the malicious redirector URL and a reference to a specific lab answer, suggesting a lure.

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=balancing+act+phet+lab+2012+answers
    • https://cdn.shopify.com/s/files/1/0439/8995/8814/files/76080675756.pdf
    • https://cdn.shopify.com/s/files/1/0440/5719/8742/files/bafuruga.pdf
    • https://cdn.shopify.com/s/files/1/0431/8425/9231/files/63754900070.pdf
    • https://cdn.shopify.com/s/files/1/0432/4517/4939/files/aspects_of_economic_development.pdf
    • https://cdn.shopify.com/s/files/1/0434/2664/4125/files/97456287147.pdf
    • https://cdn.shopify.com/s/files/1/0433/2732/4310/files/13192555108.pdf
    • https://cdn.shopify.com/s/files/1/0436/8531/4715/files/storm_in_a_teacup_book_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/5288/3352/files/42123334513.pdf
    • https://cdn.shopify.com/s/files/1/0431/6377/9221/files/fopefofunenij.pdf
    • https://cdn.shopify.com/s/files/1/0436/4196/2649/files/bedurakidilu.pdf
    • https://cdn.shopify.com/s/files/1/0439/5932/0734/files/astronauta_de_marmore_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0429/8797/8913/files/arm_coresight_soc-_400_user_guide.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_off00006039.bin
ad10271d89bd6d5013c6be9352b07f075e0e5cc866022a9985f4503c086143bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6039 5800 bytes
font_01_sfnt_off00007405.bin
0e732af874f65e3eb70a9b6e6a8524872017e68ebd3f790ed0f1a8db51175c0a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7405 10480 bytes

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