Malicious PDF — malware analysis report

Static analysis result for SHA-256 fde1fefcde4198c8…

MALICIOUS

PDF

38.0 KB Created: 2020-08-29 20:42:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b2130a38af7c997fffa664b143038a90 SHA-1: 433058feb749a088d45c1ebeb1ad3fbea70324ab SHA-256: fde1fefcde4198c81e6df771646c311049e0212746292aa3dba10771f5378cb9
150 Risk Score

Malware Insights

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

This PDF file contains a large number of embedded links, many of which point to Shopify domains, but one critical link directs to a known malicious redirector at 'ttraff.com'. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/wix?keyword=macbeth+act+2+scene+1+study+guide+answers', suggesting a lure to a malicious site disguised as a study guide. The presence of a malicious redirector link and the sheer volume of other links indicate a link farm or redirection tactic to obscure the final malicious destination.

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=macbeth+act+2+scene+1+study+guide+answers
    • https://cdn.shopify.com/s/files/1/0431/2442/4853/files/xosibumodufasalot.pdf
    • https://cdn.shopify.com/s/files/1/0441/2683/0744/files/new_periodic_table_song.pdf
    • https://cdn.shopify.com/s/files/1/0429/6074/8695/files/lijisusa.pdf
    • https://cdn.shopify.com/s/files/1/0432/3010/1668/files/gavoliziwuzexoluxawav.pdf
    • https://cdn.shopify.com/s/files/1/0429/6943/2230/files/79224295778.pdf
    • https://cdn.shopify.com/s/files/1/0430/4217/7181/files/98235898671.pdf
    • https://static.usrfiles.com/ugd/b8c837_12aba08e840a499e9130b786897c4b04.pdf
    • https://static.usrfiles.com/ugd/05900a_4671afcbe2fa4a2ab1e5987362b21876.pdf
    • https://static.usrfiles.com/ugd/834936_bc2d7d179f75475085b2ce2623e6896a.pdf
    • https://cdn.shopify.com/s/files/1/0452/5129/7440/files/eeo_reporting_categories.pdf
    • https://cdn.shopify.com/s/files/1/0440/0100/1630/files/iones_monoatomicos_y_poliatomicos.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_off000055b1.bin
cd364355a93380c78861b9cb481ca6a0ce3e4cf7a022562ffc08696fe712c823		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55B1 5692 bytes
font_01_sfnt_off00006924.bin
02d604d40ef44bbaf7262ed54428085cf4b7401b36cd2fd5488d4b8a52449aa7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6924 10088 bytes

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