Malicious PDF — malware analysis report

Static analysis result for SHA-256 9abe1b0dee4a8b62…

MALICIOUS

PDF

41.4 KB Created: 2020-09-06 03:03:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4234a63309483a17e840cc495d95b7a7 SHA-1: 604847ddf0cc6f44a63210c05f2f0015003103b2 SHA-256: 9abe1b0dee4a8b62df07c68835eddbbda40b1fcbad38cd96b3cef2d9b5f7a654
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, directing users to 'https://ttraff.me/wix?keyword=ip+assignment+agreement+pdf'. The document body, though heavily obfuscated, also contains this URL, suggesting a social engineering lure to trick users into visiting a malicious site. The file also contains a large number of embedded links, many of which point to benign content hosting sites, but the primary malicious link is clear.

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.me/wix?keyword=ip+assignment+agreement+pdf
    • https://static.usrfiles.com/ugd/b8c837_37dda59325b84745b1f6d33c61e9f468.pdf
    • https://static.usrfiles.com/ugd/ffe0d3_cde9e1b2e2e84ea0af030d18b010cc4f.pdf
    • https://static.usrfiles.com/ugd/eed56f_254db07813ed48f0a69c1d1ed0d647e8.pdf
    • https://cdn.shopify.com/s/files/1/0434/9385/1302/files/khatrimaza_bollywood_movies_hd_1080p.pdf
    • https://cdn.shopify.com/s/files/1/0428/0093/9164/files/9251051382.pdf
    • https://static.usrfiles.com/ugd/3cb679_1cc4094133224caaa65c9366ad8cb2b2.pdf
    • https://static.usrfiles.com/ugd/3e5d97_c64346146471413f8e1064430672b752.pdf
    • https://static.usrfiles.com/ugd/b8c837_5f19b026a2444fb8a703bc85c9544f80.pdf
    • https://static.usrfiles.com/ugd/0d089b_2e3a27e953e44cb68b263246b405d987.pdf
    • https://cdn.shopify.com/s/files/1/0428/8200/7199/files/cvc_words_pictures.pdf
    • https://cdn.shopify.com/s/files/1/0440/0925/9158/files/citation_mla_format_website.pdf
    • https://cdn.shopify.com/s/files/1/0430/5007/4269/files/ripese.pdf
    • https://cdn.shopify.com/s/files/1/0429/9702/2871/files/split_apple.pdf
    • https://cdn.shopify.com/s/files/1/0427/7560/9510/files/xoselenemotel.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_off000065cb.bin
1d046d808a70c99a89d1c61c5bceae96f400aa0fea44bc95a734619bf23f13be		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65CB 5268 bytes
font_01_sfnt_off000077a1.bin
f4392c8e040d1ea4ccc2bb17842dc3c26954ba2ad7592afa13a4db649ae77579		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77A1 9792 bytes

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