Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6eda70817a0b23e…

MALICIOUS

PDF

50.8 KB Created: 2020-08-29 03:24:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9b608fff4acc3b317a09c550c3868ca4 SHA-1: 3de04aa2dc36a5bb9afc7e8111b93869effca91f SHA-256: d6eda70817a0b23e6b56e90bd3b6eca6e0df5cfde409e67bc069dec43ba3daa1
150 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, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/wix?keyword=forza+mac+os', which is flagged as malicious. The presence of numerous links to Shopify domains suggests an attempt to create a link farm for SEO manipulation or to distribute further malicious content.

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/wix?keyword=forza+mac+os
    • https://cdn.shopify.com/s/files/1/0431/2471/9773/files/21661908819.pdf
    • https://cdn.shopify.com/s/files/1/0450/9886/0707/files/85521590841.pdf
    • https://cdn.shopify.com/s/files/1/0434/4807/4405/files/95289714431.pdf
    • https://cdn.shopify.com/s/files/1/0428/8305/5782/files/80626740827.pdf
    • https://cdn.shopify.com/s/files/1/0429/7090/6780/files/fight_club_bollywood_movie_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/6123/1262/files/65082722119.pdf
    • https://cdn.shopify.com/s/files/1/0429/6740/0601/files/41014851599.pdf
    • https://cdn.shopify.com/s/files/1/0450/1841/5254/files/zoxewi.pdf
    • https://cdn.shopify.com/s/files/1/0438/3014/9270/files/36108396818.pdf
    • https://cdn.shopify.com/s/files/1/0431/3173/2132/files/gekoloxonurijejasuwuluvis.pdf
    • https://static.usrfiles.com/ugd/b8c837_ffe5f4d356c04db99c343782e2aaf3dc.pdf
    • https://static.usrfiles.com/ugd/b8c837_28be5ce0730148648273f226cb8352df.pdf
    • https://detail.chiebukuro.yahoo.co.jp/qa/question_detail/q14171810869
    • 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005e29.bin
07dcc1510cb7b660c72b64c4e4801d093c00f57149f150da478ee43b6b2eaf01		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E29 4356 bytes
font_01_sfnt_off00006cd3.bin
a857d1e83c555bda005c96e03421ffc683e23dd9a4862bf59fcb3e548a2150ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CD3 15528 bytes
font_02_sfnt_off00009ba6.bin
ea75db71c9df7250347a03039f742fcd189f5fc3f08964e696816fa8b5227073		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9BA6 16092 bytes
font_03_sfnt_off0000b06e.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB06E 4324 bytes

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