Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d396722a06407b4…

MALICIOUS

PDF

43.1 KB Created: 2020-08-17 12:44:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 48a1b848afb6f9a64ce592cea15919f5 SHA-1: 54be8e2d3d57d481e0e4850ca854ca79568aa1d3 SHA-256: 9d396722a06407b45d65da848743696ad163747fa4bb07e02f61cbc86af98b1e
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 links, with one heuristic specifically identifying it as a 'PDF_SEO_LINK_FARM'. The primary malicious link, 'https://ttraff.cc/pify?keyword=bae+suzy+wallpaper', suggests a redirection to potentially harmful content. The document body, though heavily obfuscated, also contains this URL, reinforcing its malicious intent. The presence of numerous Shopify-hosted PDF links, while some are marked benign, contributes to the overall link farm characteristic.

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/pify?keyword=bae+suzy+wallpaper
    • http://tizowe.ashleyjoleendoulacare.com/uploads/1/3/0/7/130776647/7680645.pdf
    • https://cdn.shopify.com/s/files/1/0430/0832/7829/files/libodaxopakafibiro.pdf
    • https://cdn.shopify.com/s/files/1/0432/6676/9051/files/wunixegeribejewudarofa.pdf
    • https://cdn.shopify.com/s/files/1/0431/4077/6093/files/44348329545.pdf
    • https://cdn.shopify.com/s/files/1/0429/6612/2662/files/rune_factory_4_guide.pdf
    • https://cdn.shopify.com/s/files/1/0434/0416/5285/files/legal_definition_of_crime.pdf
    • https://cdn.shopify.com/s/files/1/0440/0896/4246/files/fenovatobuwiluxuw.pdf
    • https://cdn.shopify.com/s/files/1/0430/7678/0192/files/31485191005.pdf
    • https://cdn.shopify.com/s/files/1/0429/7100/5082/files/33494309688.pdf
    • https://cdn.shopify.com/s/files/1/0430/1081/8201/files/dissolution_bioavailability_and_bioequivalence_abdou.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/66456909559.pdf
    • https://cdn.shopify.com/s/files/1/0450/2949/0838/files/ontology_definition.pdf
    • https://cdn.shopify.com/s/files/1/0430/9703/0805/files/juroxevusoligabi.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_off000054b9.bin
5b9159c7bc919945fd1c2fac5c542bd60e148e0f56e2cde9cb56843f7bd2157c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54B9 4644 bytes
font_01_sfnt_off000064aa.bin
cfd75256f9ff045eea3094823d8c54f8d4e527bed60cde645974c1a29006b635		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64AA 14488 bytes
font_02_sfnt_off00009225.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9225 4324 bytes

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