Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7972da4c63627e6…

MALICIOUS

PDF

38.1 KB Created: 2020-08-21 12:43:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4be27d3f7a2eef1e4e21b1bee65ddd7e SHA-1: fa08234c8bbe829c86675146d67623235b3750d6 SHA-256: e7972da4c63627e67ae0437cdccbc203214e7c922746ffaefac87218741ea089
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=converse+plataforma+negras+rebajas'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on shopify.com. The document body, though heavily obfuscated, contains the same redirector URL, suggesting an attempt to lure users to a malicious site under the guise of a product advertisement.

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.ru/pify?keyword=converse+plataforma+negras+rebajas
    • http://files.rehobothconcertband.org/uploads/1/3/0/9/130969825/7040228.pdf
    • http://dugowiviz.rochester-santa.com/uploads/1/3/1/0/131070872/22f0e.pdf
    • https://cdn.shopify.com/s/files/1/0451/4054/1593/files/siwagasawakiwukuxexu.pdf
    • https://cdn.shopify.com/s/files/1/0430/8529/9874/files/que_es_traumatismo_craneoenceflico.pdf
    • https://cdn.shopify.com/s/files/1/0429/2886/5446/files/kadikelil.pdf
    • https://cdn.shopify.com/s/files/1/0429/7284/0090/files/91094788941.pdf
    • https://cdn.shopify.com/s/files/1/0452/6755/0370/files/carol_of_the_bells_piano_music_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0430/7497/7945/files/3765296121.pdf
    • https://cdn.shopify.com/s/files/1/0436/6244/2646/files/fadodabanuwaluzojexel.pdf
    • https://cdn.shopify.com/s/files/1/0430/0704/9877/files/61171240027.pdf
    • https://cdn.shopify.com/s/files/1/0440/9986/2680/files/neurogenic_orthostatic_hypotension_treatment_guidelines.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_off00004fe7.bin
80f3dd987a4f572959193e3d1cacb0d321979e783c169a49f522ea4b47abfede		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4FE7 5404 bytes
font_01_sfnt_off0000623d.bin
77b25825660bec951c3ba4718b6775beb3245b26212f1a9d36587d04de28c281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x623D 13148 bytes

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