Malicious PDF — malware analysis report

Static analysis result for SHA-256 231fde0653de8d49…

MALICIOUS

PDF

48.4 KB Created: 2020-08-29 02:37:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6fdb71c572517b2c9479e390090711a2 SHA-1: dae5ace45060df97c81733929253e5cfeefe7cff SHA-256: 231fde0653de8d498547289f708b0e617fcb585fbc08aa643b122bf1ec97ef42
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on Shopify. One of these links, 'https://ttraff.cc/wix?keyword=hot+rolled+alloy+steel+sheet+in+coils', is identified as a malicious redirector. This suggests the document's primary purpose is to redirect users to malicious infrastructure, likely for further exploitation or phishing.

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=hot+rolled+alloy+steel+sheet+in+coils
    • https://cdn.shopify.com/s/files/1/0445/8987/5364/files/aprende_ingles_con_juanito_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0448/0165/4935/files/law_and_order_svu_season_5.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/livoxigugefeguvon.pdf
    • https://cdn.shopify.com/s/files/1/0430/3729/4745/files/23544142426.pdf
    • https://static.usrfiles.com/ugd/b8c837_f233e7da2c0f4303a7fefed87be8e8ff.pdf
    • https://static.usrfiles.com/ugd/b8c837_f2ffacc0c6ff43fcb6dbbfa815e2754a.pdf
    • https://static.usrfiles.com/ugd/b8c837_42d41e60342244e4b845ba07bfca318e.pdf
    • https://static.usrfiles.com/ugd/b8c837_b9a42f47445e48849989b37a702e4ada.pdf
    • https://cdn.shopify.com/s/files/1/0431/1361/1421/files/9878793085.pdf
    • https://cdn.shopify.com/s/files/1/0437/0654/8377/files/property_and_casualty_study_guide.pdf
    • https://cdn.shopify.com/s/files/1/0463/1327/5554/files/encphalite_de_rasmussen.pdf
    • https://cdn.shopify.com/s/files/1/0427/8992/9116/files/cara_membuat_soal_di_google_form.pdf
    • https://cdn.shopify.com/s/files/1/0428/7689/5398/files/ramaduwagafolojujowunilu.pdf
    • https://cdn.shopify.com/s/files/1/0432/1529/0529/files/dudabetutizenumefufusag.pdf
    • https://cdn.shopify.com/s/files/1/0431/2917/6232/files/mejomenomoteka.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_off000076c1.bin
fb0c62b8ad7b8290a67039e7f005b1fc7a6dad56380834ec7098774c2e090011		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76C1 5092 bytes
font_01_sfnt_off00008809.bin
a3d074161998838baf52e14997a5b2a106e1bfef133715b4457e4dcc50059917		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8809 14328 bytes

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