Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b007ee864e2e2db…

MALICIOUS

PDF

43.2 KB Created: 2020-08-31 23:46:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ae0d8a6cba5768860b012a9f6c245a63 SHA-1: 06770f94f2602931c5a65f06fc0b62ce0b6ad178 SHA-256: 4b007ee864e2e2db59f05a9cf1223c6c01918101977509f57ea368bbc34aaf8d
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, the PDF exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on 'static.usrfiles.com'. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily corrupted, contains the malicious URL and appears to be a lure related to 'smart goals template examples'. No scripts were extracted from this sample.

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=smart+goals+template+examples
    • https://static.usrfiles.com/ugd/3615fb_05935e706ce742b9a72f7fc977b462c3.pdf
    • https://static.usrfiles.com/ugd/b8c837_5444f467fc5a44e5adaaa0d161119b7f.pdf
    • https://static.usrfiles.com/ugd/cc15ef_54d6d8e32ba8448ea2a730b5c3ed5fbf.pdf
    • https://static.usrfiles.com/ugd/03ae60_a19addd21b9946f7aa654b4389a78cb3.pdf
    • https://static.usrfiles.com/ugd/3b7182_6f50c055879741458cac1bff6c5faebf.pdf
    • https://static.usrfiles.com/ugd/d5cf39_8548fd5aeadc48fd84d6f30caa5207f3.pdf
    • https://static.usrfiles.com/ugd/225520_195542f8d2d644f298b500dbf75300f9.pdf
    • https://static.usrfiles.com/ugd/b8c837_172efa5ee21f4ac49c4e42bfffa82872.pdf
    • https://cdn.shopify.com/s/files/1/0431/2596/4957/files/misifagexafokurovekusu.pdf
    • https://cdn.shopify.com/s/files/1/0428/7247/1718/files/49327009828.pdf
    • https://cdn.shopify.com/s/files/1/0429/5468/6617/files/xaxomobokokazivexuk.pdf
    • https://static.usrfiles.com/ugd/238140_c688ae89907d4855a2f18855db018e56.pdf
    • https://static.usrfiles.com/ugd/2f07a1_ac535bac2de349169e9a7efb48d3b9a8.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_off00006c0e.bin
b1b3a759022b97f8f626ffed125aa28039124539c029e4128684bdce8669b635		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C0E 5312 bytes
font_01_sfnt_off00007e0d.bin
d4469b7a74135b96fa157f30d3931fbcebf42989f467f062226e0b795772c884		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E0D 10060 bytes

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