Malicious PDF — malware analysis report

Static analysis result for SHA-256 571c1471d524ad9b…

MALICIOUS

PDF

45.0 KB Created: 2020-09-18 16:54:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b79546543306414302082fa6f1102f98 SHA-1: f429ce53e1b567be2effb676ce71c32de60f4a6c SHA-256: 571c1471d524ad9bd1a68f510c40e6640850b42c8270fd447699f5fed0bc6bf6
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at 'ttraff.club'. This suggests the document is designed to lead users to malicious content, potentially for phishing or malware distribution. The ML classifier strongly supports the malicious verdict.

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=webkinz+music+videos
    • https://cdn.shopify.com/s/files/1/0429/5108/2143/files/37713558436.pdf
    • https://cdn.shopify.com/s/files/1/0439/1639/4648/files/meaning_of_social_change.pdf
    • https://cdn.shopify.com/s/files/1/0479/4649/8204/files/portable_table_saw_stand_diy.pdf
    • https://cdn.shopify.com/s/files/1/0433/3273/1030/files/bomimelobaderexudajid.pdf
    • https://cdn.shopify.com/s/files/1/0433/9594/0503/files/excel_advanced_filter_copy_to_another_sheet.pdf
    • https://86462512-5c1a-4e47-bc7d-b003726d6f34.filesusr.com/ugd/4ca7f5_ccf950a1ab6245c7909e8862bf9237d0.pdf?index=true
    • https://58426014-dddb-4aac-9131-120ccd3f5907.filesusr.com/ugd/685707_d8b5f7a825f34b80969db861817a79fc.pdf?index=true
    • https://596649f5-0db8-418c-b78c-d766413e85e4.filesusr.com/ugd/3c9ac1_3cb17a60101f4f19b42e04ce3c5c7813.pdf?index=true
    • https://378cfe49-f190-4389-9952-3f0f26acdc26.filesusr.com/ugd/d90490_ea2d51ddff4242e58d1a33c2995a41ec.pdf?index=true
    • https://b4ff923e-50c4-4bb4-82fd-e9a1d062242b.filesusr.com/ugd/0d018b_b50e0630f1654610b77edb8bc48b4a8f.pdf?index=true
    • https://ef68d7d4-27a8-4030-93b2-f9785a52996b.filesusr.com/ugd/18ee90_6816b0f1c0cc4803bc95b5f7ee93ad60.pdf?index=true
    • https://b38e1218-8bdb-4391-995f-e8feccdd1c41.filesusr.com/ugd/1e557c_d0da3b7e2cdd49f5b054eb793be583a0.pdf?index=true
    • https://e1582f85-0acf-4c60-8c5c-40aba0772dc1.filesusr.com/ugd/e50c99_3977667cb02545dca4072f8a49492565.pdf?index=true
    • https://7d2732b4-775c-4b56-b29c-1c199e7141ea.filesusr.com/ugd/c63bf9_44e214e651784e87bac91f01293ab5d1.pdf?index=true
    • https://ed80d521-bfb1-4335-b157-38bb4caf6bf5.filesusr.com/ugd/3225da_48ff5d9cd38c42ec924f567bd0931800.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/
    • https://7d2732b4-775c-4b56-b29c-1c199e7141ea.filesusr.com/ugd/c63bf9_44e214e651784e87bac91f01293ab5d1.pdf?index=tr

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005e5d.bin
bc99aebd9d7920dce7d1cde30d892c1ffd45c46a43b5b15ab66e62bca31c3b08		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E5D 4876 bytes
font_01_sfnt_off00006ee9.bin
b8b682c4a10cdc7bd04658a7b1c6e041c7e3f7ac9fccbaaffe9d0cf9ee4cd12d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EE9 13456 bytes
font_02_sfnt_off00009985.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9985 4324 bytes

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