Malicious PDF — malware analysis report

Static analysis result for SHA-256 c49750cbcff62b2b…

MALICIOUS

PDF

37.9 KB Created: 2020-08-31 00:08:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6b86369a369dfbc399f134b2159d515c SHA-1: 1632e99e48d8b1234d20d9ce0a23067c946a2dc0 SHA-256: c49750cbcff62b2bfd3e3433b548c540701ff7d04b9ed1a573b4ff9375e92b9c
120 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 firing for PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM. The primary URL, https://ttraff.com/wix?keyword=imagenes+de+juguetes+tradicionales+p, is flagged as malicious. The document body is heavily obfuscated and appears to be largely junk data, but it does contain the same keyword as the initial URL, suggesting a lure. The embedded links likely serve to redirect users to malicious content or to manipulate search engine results.

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=imagenes+de+juguetes+tradicionales+p
    • https://static.usrfiles.com/ugd/f1d680_518861003aab49c8b78af747146e6083.pdf
    • https://static.usrfiles.com/ugd/b8c837_809096bc45d647aabe6144a7a1001dca.pdf
    • https://static.usrfiles.com/ugd/33a2e4_82a49ceb95414353bffae9636b1917a2.pdf
    • https://static.usrfiles.com/ugd/87a178_543af27d2c28496f894b88debc340d6d.pdf
    • https://static.usrfiles.com/ugd/760101_ab4c3590805d4fe9966ff91ed2ee2b0b.pdf
    • https://static.usrfiles.com/ugd/f0e51d_0bfbae8b68c74e74808f4fb23bccce97.pdf
    • https://cdn.shopify.com/s/files/1/0432/1535/6067/files/78045126238.pdf
    • https://cdn.shopify.com/s/files/1/0432/7525/5961/files/37036549204.pdf
    • https://cdn.shopify.com/s/files/1/0433/9479/3630/files/dexoturen.pdf
    • https://cdn.shopify.com/s/files/1/0430/5561/2058/files/how_many_blocks_does_water_fertilize.pdf
    • https://cdn.shopify.com/s/files/1/0460/9107/5748/files/sessho-_seki_fragment.pdf
    • https://cdn.shopify.com/s/files/1/0430/9742/4026/files/90458458861.pdf
    • https://cdn.shopify.com/s/files/1/0428/8954/3836/files/mini_diva_porn.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_off000054dd.bin
11caf13b96af35876b78d087751e0c4875e631af9566826bbe385991342ff228		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54DD 5408 bytes
font_01_sfnt_off00006724.bin
cbe352c6d81e295faff7c4770159c4536dacc26ba47483740d1db73817cca503		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6724 10396 bytes

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