Malicious PDF — malware analysis report

Static analysis result for SHA-256 424a8a7d2df07fe5…

MALICIOUS

PDF

40.5 KB Created: 2020-08-29 23:38:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bdfe42cef5e511c48e854aa8cd704279 SHA-1: dac2f6fc8ec0986495740dabf6e0f7ac948c896b SHA-256: 424a8a7d2df07fe5a1a6ec218846c88bafa74b7ce47389310e04e4dd7a63b4e5
150 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with a critical heuristic identifying it as a link farm. One of the primary links, 'https://ttraff.com/wix?keyword=thor+123+movies', is flagged as a known malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting the primary intent is to lure users to malicious content via these links.

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=thor+123+movies
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kefemomorevogik.pdf
    • https://cdn.shopify.com/s/files/1/0451/1966/8377/files/fourier_transform_properties.pdf
    • https://cdn.shopify.com/s/files/1/0432/7846/7222/files/horizontal_scroll_css.pdf
    • https://cdn.shopify.com/s/files/1/0430/8851/1130/files/metal_cutting_and_machine_tools_book.pdf
    • https://cdn.shopify.com/s/files/1/0432/7945/0272/files/poxum.pdf
    • https://static.usrfiles.com/ugd/77d535_458de7629dc74abdb266b26125472720.pdf
    • https://static.usrfiles.com/ugd/ca300b_c2234617d4404b959378c2c964030264.pdf
    • https://cdn.shopify.com/s/files/1/0439/2511/0952/files/62612003554.pdf
    • https://cdn.shopify.com/s/files/1/0435/8966/4926/files/undertaking_annexure_e1_hssc.pdf
    • https://cdn.shopify.com/s/files/1/0431/7321/6411/files/15415072873.pdf
    • https://cdn.shopify.com/s/files/1/0451/7065/5381/files/10797744218.pdf
    • https://cdn.shopify.com/s/files/1/0429/3636/9318/files/57326831530.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_off000058e8.bin
7ba3d1e335b9f6b9a91e7665b4138dbedbebc3641ff649d15cb706e385b1b1b8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58E8 5040 bytes
font_01_sfnt_off000069f3.bin
daad3f347a4f42f432ee9983e619a7c063e36761dba5934b469418034847e28e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69F3 1800 bytes
font_02_sfnt_off00007281.bin
12e6b3387cc46f5fdbd3315e76df64bd66535857cbc3ec3677b9a4b7607a9110		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7281 10136 bytes

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