Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8db2fcd38de6de0…

MALICIOUS

PDF

48.6 KB Created: 2020-09-02 00:24:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b4549ad5220d9c48e272daa562628f48 SHA-1: 24d0f98e65ef6b1921fe962cef1064d48442f9d5 SHA-256: c8db2fcd38de6de06b11a69153de19961aa6adf18c71a0d8ca5027ccc7b1ad0b
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 of which point to a link farm hosted on Shopify. One of these links, https://ttraff.com/wix?keyword=que+quiere+decir+movimiento+rectilineo+uniforme, is identified as a malicious redirector. The document body, though heavily obfuscated, contains this URL and other PDF links, suggesting a lure to a malicious site under the guise of educational content.

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.com/wix?keyword=que+quiere+decir+movimiento+rectilineo+uniforme
    • https://static.usrfiles.com/ugd/2b25b5_a2d19222be4643bd9dc08f111ac364f1.pdf
    • https://static.usrfiles.com/ugd/f8de3e_3d1e2df5b44a49fb9ac71d8d25e4097e.pdf
    • https://static.usrfiles.com/ugd/a107db_3e36e9a7d7514e5285737fff33aa10f2.pdf
    • https://cdn.shopify.com/s/files/1/0432/0873/6928/files/bwv_1001_violin.pdf
    • https://cdn.shopify.com/s/files/1/0431/6702/3253/files/48350250383.pdf
    • https://cdn.shopify.com/s/files/1/0435/3143/6186/files/78101779234.pdf
    • https://cdn.shopify.com/s/files/1/0429/6422/2101/files/67653638381.pdf
    • https://cdn.shopify.com/s/files/1/0437/6081/2190/files/646_326_9293.pdf
    • https://cdn.shopify.com/s/files/1/0431/2812/7637/files/kubler_ross_stages_of_grief_and_loss.pdf
    • https://cdn.shopify.com/s/files/1/0435/6908/6619/files/54640272741.pdf
    • https://cdn.shopify.com/s/files/1/0432/9363/8816/files/kafawunusiv.pdf
    • https://static.usrfiles.com/ugd/b8c837_eb8056e2478d4a9590e3d1a63ee3de1e.pdf
    • https://static.usrfiles.com/ugd/fb83f1_6ad36013445d4e8193808acf13745510.pdf
    • https://static.usrfiles.com/ugd/cc089a_8b2cdff3627848c0b2dc378f12fd8c57.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006360.bin
9aecaf1981dc222202eeb8c47dd6914d77ac9f50bb881ce526f3e64931c0b2ae		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6360 5028 bytes
font_01_sfnt_off00007471.bin
3a406ddacef569ee017ac597e8fe2cd98872667eeac2aa6d8764cc1b912a6e85		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7471 14136 bytes
font_02_sfnt_off0000a06d.bin
c43c81af3addadc619f1b50b0eb79006c69e58cb90abf43f7a5fbd940e22698c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA06D 16060 bytes

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