Malicious PDF — malware analysis report

Static analysis result for SHA-256 311ba947f7dec249…

MALICIOUS

PDF

42.2 KB Created: 2020-08-31 19:21:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0323ab017114de5ba94ee5bec06a868d SHA-1: d6f8bbb5b9c7b924cb7e9a1ce55d626885fa1d09 SHA-256: 311ba947f7dec249ffc2d4bcdbb682cfc29f06448e6783eae1d15cf65698253a
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 'https://ttraff.cc/wix?keyword=grape+vine+trellis+design+and+plans+guide'. The document body, though heavily obfuscated, contains this same URL, suggesting the primary intent is to redirect the user to this malicious site. The PDF also contains a large number of embedded links, many of which are to shopify.com, but the critical heuristic indicates the primary threat is the ttraff.cc redirector.

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.cc/wix?keyword=grape+vine+trellis+design+and+plans+guide
    • https://cdn.shopify.com/s/files/1/0434/1760/0152/files/98186115492.pdf
    • https://cdn.shopify.com/s/files/1/0433/7637/8014/files/gekijiligaxagi.pdf
    • https://cdn.shopify.com/s/files/1/0434/2353/1175/files/economist_may_2020.pdf
    • https://cdn.shopify.com/s/files/1/0457/4878/1212/files/akram_bhai_ringtone.pdf
    • https://static.usrfiles.com/ugd/f8de3e_bd2f0dff0c7449aca166934fe03655f6.pdf
    • https://static.usrfiles.com/ugd/97aff7_9299750ce8a74876807fa4c4a60de25d.pdf
    • https://static.usrfiles.com/ugd/097bd5_c47cb148cf434424a58a652e33f53666.pdf
    • https://static.usrfiles.com/ugd/5438e3_224609b78ad94bdaa039b95b1968d820.pdf
    • https://static.usrfiles.com/ugd/5ed537_9fa68f2b3ac24a1b9bd6086fa38bf09f.pdf
    • https://cdn.shopify.com/s/files/1/0435/9595/6386/files/gimuguxonipifuxudak.pdf
    • https://cdn.shopify.com/s/files/1/0437/5497/9477/files/convert_file_to_word_2020_online_free.pdf
    • https://cdn.shopify.com/s/files/1/0434/3152/6557/files/18604300890.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005ae1.bin
be15c725ac94c2c4df612014fdd36d1e41462c0eef3b30d21a1f31f8b01fce1f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5AE1 4992 bytes
font_01_sfnt_off00006bea.bin
3443b2ac75ab7035993e1a323e997440fa5b47b56e1be8f70dbb7f5fe8d10061		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BEA 10048 bytes
font_02_sfnt_off00008e16.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E16 4324 bytes

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