Malicious PDF — malware analysis report

Static analysis result for SHA-256 946b42dec226dd15…

MALICIOUS

PDF

51.9 KB Created: 2020-08-28 06:08:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c2472905b9eebf0d30381e7753df615e SHA-1: 34bea9c151e5aa7ddb18e72fb3cad9a307be879c SHA-256: 946b42dec226dd15e36e3dfe070575996a7cd6c7014534536ee432a326ac68f9
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL and references a discontinued product, suggesting a lure. The PDF also exhibits a link farm pattern, with numerous links to Shopify-hosted PDFs, likely for SEO manipulation to improve the ranking of the malicious redirector. The primary intent appears to be directing the user to the malicious ttraff.com domain.

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/pify?keyword=drobo+mini+discontinued
    • http://files.gttreats.com/uploads/1/3/0/8/130813923/rudem_zuworaxexiku_gobitare_buwakilivojux.pdf
    • https://cdn.shopify.com/s/files/1/0432/6703/1200/files/22328834365.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xanixiki.pdf
    • https://cdn.shopify.com/s/files/1/0429/1896/9511/files/fokoretat.pdf
    • https://cdn.shopify.com/s/files/1/0434/0288/7322/files/zewarufugadaxelasemovo.pdf
    • https://cdn.shopify.com/s/files/1/0431/9569/5266/files/xulegatobinavemibivatu.pdf
    • https://cdn.shopify.com/s/files/1/0428/7502/7619/files/opposite_words_100.pdf
    • https://cdn.shopify.com/s/files/1/0437/1762/3957/files/hypothesis_for_bacterial_transformation_lab.pdf
    • https://cdn.shopify.com/s/files/1/0433/6022/3382/files/64602698622.pdf
    • https://cdn.shopify.com/s/files/1/0431/2917/6232/files/viwerubosod.pdf
    • https://cdn.shopify.com/s/files/1/0430/0223/2983/files/vudegedezubodurujuwefomir.pdf
    • https://cdn.shopify.com/s/files/1/0433/9623/5415/files/dictionary_english_to_english_meaning.pdf
    • https://cdn.shopify.com/s/files/1/0427/4959/1718/files/lawadi.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_off00007411.bin
7348aa7664b4cf21cfb5d13f90d51d63a2e7df9e6e7460aa7af777e9eed2027e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7411 4864 bytes
font_01_sfnt_off00008478.bin
37616426f6cba239797830a34042669a63245ef51aa56882007180419f3cfb13		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8478 15692 bytes
font_02_sfnt_off0000b4d2.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB4D2 4324 bytes

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