Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd667db6e2858848…

MALICIOUS

PDF

40.4 KB Created: 2020-09-17 09:07:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a068c96716846dc952ad3e5bc5a6066a SHA-1: f09188b51710d981a7388110b656ad247082d2ca SHA-256: dd667db6e2858848a4c99fa111814469d5af949e3d306f3eed54b586a89757e1
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Addends

The PDF contains a link to a known malicious redirector, ttraff.club, which is likely intended to lead the user to a malicious site. The document also contains a large number of external PDF links, many hosted on Shopify, suggesting a link farm or SEO poisoning attempt. No scripts were extracted, and the document body is heavily obfuscated, but the presence of the malicious redirector link is a strong indicator of malicious intent.

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.club/wix?keyword=damage+health+poison+ix+enchantment
    • https://cdn.shopify.com/s/files/1/0433/1284/0872/files/bujefenomezugapuz.pdf
    • https://cdn.shopify.com/s/files/1/0475/9276/7644/files/wagawisipevo.pdf
    • https://cdn.shopify.com/s/files/1/0431/2858/6402/files/60698716065.pdf
    • https://251dd6d0-d664-4d81-a362-bd7aa1ad01d4.filesusr.com/ugd/8a4248_698d1b218cd24e64ae14c7b8a42724bd.pdf?index=true
    • https://e22bfeca-4d61-42dd-ba35-9717489dc02d.filesusr.com/ugd/9ec29b_6e74ae35405145a98772c89865801940.pdf?index=true
    • https://29b2aebe-4e23-4323-b768-83c9ccdcf9af.filesusr.com/ugd/65e777_947101eb093b497eafba34b29f0996dd.pdf?index=true
    • https://e42dc1cf-cfef-4cc4-a702-ba1575673c43.filesusr.com/ugd/d51d36_d6ccbf714ef9435a9eeb5f4b9276cb95.pdf?index=true
    • https://4c26f48d-5acc-4523-b108-22071efd595d.filesusr.com/ugd/11b39a_c979e01b1faa482d9ee1bcea1439ca72.pdf?index=true
    • https://1f430005-6bbc-4b5b-afb9-eb972b7a2df9.filesusr.com/ugd/43d598_449254b20ce84623abf0c0e8daa05f42.pdf?index=true
    • https://e480d3c0-80f9-43d3-b893-b4149e99b490.filesusr.com/ugd/01bc73_6b0d7f7fa80546bfb1ed0a69e5787287.pdf?index=true
    • https://62f50f26-a0ce-4a3a-b009-66472df54b5f.filesusr.com/ugd/95089d_8fada783b0654f4493096d90b0444826.pdf?index=true
    • https://f943b14f-789d-4d09-93b6-0b6362061ba5.filesusr.com/ugd/271e65_9814ee2050144901852cbed360c0cbf9.pdf?index=true
    • https://23c6e5a5-d0da-4185-b800-a59825db5807.filesusr.com/ugd/565485_2daa4fe856104bf0b50fad835ebfcf5c.pdf?index=true
    • https://a5510a7e-6747-4cde-8ce3-1b3a048c1fe5.filesusr.com/ugd/3f0e57_1bea335e066149219bc16646395d87fa.pdf?index=true
    • https://4d47e975-3e16-4bfe-b5b4-c18048a34f8f.filesusr.com/ugd/97aff7_50728bbb62424aaaaf90536502d70b77.pdf?index=true
    • https://a2fafb03-73cc-462b-9c56-c8985c155d5e.filesusr.com/ugd/595093_3e28770bddfd49e4ba83183884f47cbf.pdf?index=true
    • 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_off00005f36.bin
171ef88a791a8db6326b46a1d7ba656f450e46bbf357fc3a652ed591844569be		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F36 5316 bytes
font_01_sfnt_off00007139.bin
5eaf6379dc10db35f89d3a63c1073c05a4b3629e1b3259b2860c903170b21946		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7139 10364 bytes

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