Malicious PDF — malware analysis report

Static analysis result for SHA-256 52ecb5495822ea6e…

MALICIOUS

PDF

51.0 KB Created: 2020-08-31 19:00:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 965c34ae9b03742add779c7a0887f883 SHA-1: 04d542b09a9bf641b84796f746a0c50765e016b9 SHA-256: 52ecb5495822ea6e941c7a82738f6996a16317c5f477473c4ed2bf4b60ac5235
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, characteristic of a link farm. One of these links, 'https://ttraff.ru/wix?keyword=ideal+protein+phase+3+protocol+sheet', is identified as a malicious redirector. The document body appears to be malformed or heavily obfuscated, but the presence of the malicious redirector and the link farm structure strongly suggest a malicious intent, likely to direct users to harmful content or further stages of an attack.

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=ideal+protein+phase+3+protocol+sheet
    • https://cdn.shopify.com/s/files/1/0440/9170/3448/files/guide_aviculture.pdf
    • https://cdn.shopify.com/s/files/1/0432/6532/7262/files/97705098737.pdf
    • https://cdn.shopify.com/s/files/1/0437/7359/1703/files/36738412759.pdf
    • https://cdn.shopify.com/s/files/1/0435/6918/4931/files/bovovawubemova.pdf
    • https://cdn.shopify.com/s/files/1/0428/8184/3353/files/47313309269.pdf
    • https://cdn.shopify.com/s/files/1/0435/3975/9255/files/crack_office_2016_mac.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/56325204281.pdf
    • https://cdn.shopify.com/s/files/1/0430/3601/6803/files/dobejivavokatowesekepu.pdf
    • https://static.usrfiles.com/ugd/93c935_a67c6fab276c406eaa3d55ea375fbf32.pdf
    • https://static.usrfiles.com/ugd/824332_377e5b8cfc1d449491f9b444224ab00e.pdf
    • https://cdn.shopify.com/s/files/1/0430/9378/6778/files/university_physics_test_bank.pdf
    • https://cdn.shopify.com/s/files/1/0430/0007/0307/files/98031338840.pdf
    • https://cdn.shopify.com/s/files/1/0430/0305/2191/files/anime_apk_firestick_2019.pdf
    • https://cdn.shopify.com/s/files/1/0431/0600/9255/files/60435971417.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_off00007c5a.bin
d2b2fb0aff68569c0b94b6dd03891d0c006adf249f93540f5dc62add5d008aa9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C5A 5048 bytes
font_01_sfnt_off00008d66.bin
9aff28e819ef3543b4cd98ab700f5f9433dfa060ce05092860dabcae4b060494		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D66 10420 bytes
font_02_sfnt_off0000b110.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB110 4324 bytes

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