Malicious PDF — malware analysis report

Static analysis result for SHA-256 fcf5aa68ba136ed0…

MALICIOUS

PDF

65.3 KB Created: 2020-08-30 12:15:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 584aa90c20fe4ab1c089a2d6beedd656 SHA-1: 4ed45f083c38ee7607d303178824498064fdbe2a SHA-256: fcf5aa68ba136ed07da5a9ac51b242166f8ea6680412434b2b048359eb0944f6
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector at 'https://ttraff.ru/wix?keyword=dune+by+frank+herbert+movie'. Another critical heuristic identified a PDF link farm, with 'https://static.usrfiles.com/ugd/df4650_ceafb49fd3874289aced6da9d4bc8b3d.pdf' being the first listed. The document body, though heavily obfuscated, also contains the malicious redirector URL, suggesting the primary intent is to direct users to malicious infrastructure.

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.ru/wix?keyword=dune+by+frank+herbert+movie
    • https://static.usrfiles.com/ugd/df4650_ceafb49fd3874289aced6da9d4bc8b3d.pdf
    • https://static.usrfiles.com/ugd/b8c837_f451dc816fca4411af055875a0af53e9.pdf
    • https://static.usrfiles.com/ugd/0a0016_587b683a09dc428281e3c4e69c07e068.pdf
    • https://static.usrfiles.com/ugd/b8c837_1cc25ac370e2448e87dc807402b45e3a.pdf
    • https://static.usrfiles.com/ugd/e3ed1f_649c15ed828a461c98f785946dc25a17.pdf
    • https://static.usrfiles.com/ugd/6240f8_17369abd74e547b29ec7838cdce2b26a.pdf
    • https://static.usrfiles.com/ugd/12dc78_3f2075c93992402095939c2e09034ec0.pdf
    • https://cdn.shopify.com/s/files/1/0432/6057/5912/files/22124078445.pdf
    • https://cdn.shopify.com/s/files/1/0439/1036/5339/files/alagappan_medicine_6th_edition_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/6262/3394/files/36639815601.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/76588695657.pdf
    • https://cdn.shopify.com/s/files/1/0433/5671/7206/files/tepuvitela.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/
    • https://static.usrfiles.com/ugd/0a0016_587b683a09dc

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b500.bin
fe4a1f90be0ba986a710c495671c1f2356693d4bfef5b4b3736f2dff526f4bdb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB500 5044 bytes
font_01_sfnt_off0000c60d.bin
9621496c633437a8a56062010bef932830cfe2deaa62e595c1b7c36c4e9e481c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC60D 10580 bytes
font_02_sfnt_off0000ea23.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEA23 4324 bytes

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