Malicious PDF — malware analysis report

Static analysis result for SHA-256 a789b3d0065473d3…

MALICIOUS

PDF

39.9 KB Created: 2020-08-31 07:03:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 924aa13bf69d4d859dc99ff56b723a5c SHA-1: 0e2a933b1d2bf338c4b67ed2c2518609f8b74d92 SHA-256: a789b3d0065473d34c8eff1577ed3131b27aef1cf752f7d53379ac70034fc050
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded URLs, a technique often used in SEO link farms to manipulate search engine rankings or distribute malicious content. One of the embedded URLs, 'https://ttraff.cc/wix?keyword=normativas+aplicadas+al+equipo+de+computo', is flagged as a malicious redirector. The presence of numerous links, including one to a known malicious redirector, strongly suggests an attempt to lure users to harmful destinations.

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=normativas+aplicadas+al+equipo+de+computo
    • https://cdn.shopify.com/s/files/1/0430/8064/6807/files/migezenanajelo.pdf
    • https://cdn.shopify.com/s/files/1/0435/0076/5336/files/bing_crosby_christmas_songs.pdf
    • https://cdn.shopify.com/s/files/1/0434/6658/8325/files/nefofafodajak.pdf
    • https://cdn.shopify.com/s/files/1/0432/3622/9277/files/paint_tool_sai_1.2.5_full_download.pdf
    • https://cdn.shopify.com/s/files/1/0436/5189/1358/files/bertrand_russell_francais.pdf
    • https://cdn.shopify.com/s/files/1/0439/6436/7006/files/talking_as_fast_as_i_can_free_download.pdf
    • https://static.usrfiles.com/ugd/edb4a7_9263a648efe841f5a92656c79d765788.pdf
    • https://static.usrfiles.com/ugd/b8c837_48151c44e7f5418980e2c23affea03ec.pdf
    • https://static.usrfiles.com/ugd/b3bc21_733d855c3a8d409aa355ca2fce698ed5.pdf
    • https://static.usrfiles.com/ugd/b8c837_3a08abdde3d64b1598a162903453a622.pdf
    • https://static.usrfiles.com/ugd/e02969_7b733326fb484a07a40bf814ed5cfdbe.pdf
    • https://static.usrfiles.com/ugd/b8c837_21b5a5a532714f12850f8b1957d32f77.pdf
    • https://static.usrfiles.com/ugd/b8c837_8f3cfe0583d54cd0b63d2ef6556a1ace.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_off00005d21.bin
db70e09e64dc3c959eba9420ee9e5be6281647f61f91fcae4327ced7b87d9454		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D21 5376 bytes
font_01_sfnt_off00006f52.bin
a43bce16f9408bd4088b7c3853b34012ff748ca7497d6e6d7de7724664c98dc2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F52 10384 bytes

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