Malicious PDF — malware analysis report

Static analysis result for SHA-256 d618d4c01e804c40…

MALICIOUS

PDF

44.4 KB Created: 2020-08-17 11:27:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 977ca7b217c819da6c82256a059dcf16 SHA-1: 360933c49eea025e2b249672b6a452e858f677ea SHA-256: d618d4c01e804c40b45153ed7ed408aed9faeb7ab9f2a7951a0ad51c2e6fc854
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains text referencing a 'baofeng uv- 5r idiots guide' and the malicious URL. This suggests the document is designed to trick users into clicking the link, likely leading to further malicious content or downloads.

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=baofeng+uv-+5r+idiots+guide
    • http://files.jestersmvp.com/uploads/1/3/2/6/132695956/163b9daf863dd.pdf
    • http://files.irishwinters.com/uploads/1/3/0/9/130969077/4545217.pdf
    • http://zexepo.brianaowenphotography.com/uploads/1/3/0/9/130969488/1259252.pdf
    • https://cdn.shopify.com/s/files/1/0432/5857/7064/files/18725546199.pdf
    • https://cdn.shopify.com/s/files/1/0435/4156/1503/files/95360130322.pdf
    • https://cdn.shopify.com/s/files/1/0431/1079/3382/files/iron_deficiency_anemia_article.pdf
    • https://cdn.shopify.com/s/files/1/0437/1369/1799/files/90918601050.pdf
    • https://cdn.shopify.com/s/files/1/0431/6296/0023/files/1252121769.pdf
    • https://cdn.shopify.com/s/files/1/0436/9462/0837/files/wosegidobudaj.pdf
    • https://cdn.shopify.com/s/files/1/0429/2942/2499/files/pitomurujosulusubine.pdf
    • https://cdn.shopify.com/s/files/1/0428/9714/6019/files/83125852456.pdf
    • https://cdn.shopify.com/s/files/1/0430/8349/7623/files/xogewisegeguz.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_off00006eec.bin
95f69a7bb2e9d2bae2fd57ddc4b0994e95552783896b5b93d9cbc654690fb6a0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EEC 5308 bytes
font_01_sfnt_off00008124.bin
59f31201538d244ee9af2ca308ca513e5c47fa1347c6cec8acccf41ced3528d2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8124 10480 bytes

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