Malicious PDF — malware analysis report

Static analysis result for SHA-256 92ba23830c7ec0cd…

MALICIOUS

PDF

41.5 KB Created: 2020-08-30 07:24:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 961a4fc12c4f697be0a3398c5ca35682 SHA-1: 7cc3b8ce568844954c9f49f99975281b46f43ffc SHA-256: 92ba23830c7ec0cd26c67ce819791430bea72b54c41203180277ae407f1d8fe6
120 Risk Score

Malware Insights

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

The PDF file contains a link that redirects to a known malicious domain, ttraff.com, disguised with a diet-related keyword. This indicates a social engineering lure to drive traffic to malicious infrastructure. The document body, though heavily obfuscated, contains the same URL. The presence of a link farm heuristic further suggests this PDF is part of a campaign to distribute malicious content.

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=biggest+loser+diet+plan
    • https://static.usrfiles.com/ugd/724bd4_02b6c1a81124495cbc5a382ce50a6d27.pdf
    • https://static.usrfiles.com/ugd/bfbc46_94483d7ef30945108963f39b820e76da.pdf
    • https://static.usrfiles.com/ugd/599026_bf25d07e34884cc09638b16f5f78e48b.pdf
    • https://static.usrfiles.com/ugd/b8c837_a9cc06c6fb374e959498cb5485af8591.pdf
    • https://static.usrfiles.com/ugd/b8c837_00d44119059045af8d821055747431c7.pdf
    • https://cdn.shopify.com/s/files/1/0432/7974/5192/files/nfl_injury_report_2019_fantasy_list.pdf
    • https://cdn.shopify.com/s/files/1/0430/0147/9321/files/13932775200.pdf
    • https://cdn.shopify.com/s/files/1/0431/7121/7565/files/duxevopabuzomitimirew.pdf
    • https://cdn.shopify.com/s/files/1/0433/2394/9224/files/41381067708.pdf
    • https://cdn.shopify.com/s/files/1/0438/4522/2557/files/71969636494.pdf
    • https://static.usrfiles.com/ugd/b8c837_00fd662ccaa04630affd15a124454021.pdf
    • https://static.usrfiles.com/ugd/b8c837_a51bde549a4b435ea3aabcaf1a2a355d.pdf
    • https://static.usrfiles.com/ugd/c0b427_a95f8f35df5c47ad89c23832d7ed6559.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_off0000635d.bin
568f1a77d4535a39767422acfd2df686d54ccc96e1136b317bd00dbe3c29b217		 pdf-font-stream PDF embedded font (sfnt) at offset 0x635D 5176 bytes
font_01_sfnt_off000074fd.bin
2e75495adf49e2a72976fc27480380e9b22fbd8ebdcd1d182048198389f453cd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74FD 10704 bytes

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