Malicious PDF — malware analysis report

Static analysis result for SHA-256 82a2287a670d149c…

MALICIOUS

PDF

73.5 KB Created: 2020-08-02 16:41:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7bef83bad12e6da47decd83d184b0cf1 SHA-1: 6daa99b1e2cad39e399e3a0c1ce58e33b7e9a61f SHA-256: 82a2287a670d149c61324fa1feab9f50eafac6e2b7efb06cdef424b25814e7b1
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, specifically pointing to 'https://ttraff.com/pify?keyword=debye+huckel+equation'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, with 'https://cdn.shopify.com/s/files/1/0432/5857/7046/files/parekivutesove.pdf' being one of the identified links. The document body, though heavily obfuscated, contains the redirector URL, suggesting a social engineering lure to a malicious site.

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/pify?keyword=debye+huckel+equation
    • http://files.the3x5club.com/uploads/1/3/1/3/131383651/kekifojegav-mimevaferigex.pdf
    • http://files.rockymountbc.net/uploads/1/3/2/6/132681038/8645252.pdf
    • http://files.aegisve.com/uploads/1/3/2/6/132681295/vogeve-jekika-xomijipifeturo-binulebozudet.pdf
    • http://files.prairiedusttrail.com/uploads/1/3/1/1/131164275/6483673.pdf
    • https://cdn.shopify.com/s/files/1/0432/5857/7046/files/parekivutesove.pdf
    • https://cdn.shopify.com/s/files/1/0440/7905/5000/files/26721349185.pdf
    • https://cdn.shopify.com/s/files/1/0437/2017/9864/files/risejikaxugopifakovewikof.pdf
    • https://cdn.shopify.com/s/files/1/0430/9087/0423/files/78136403760.pdf
    • https://cdn.shopify.com/s/files/1/0437/4138/0759/files/kegigavirimopin.pdf
    • https://cdn.shopify.com/s/files/1/0435/0096/1947/files/18263060647.pdf
    • https://cdn.shopify.com/s/files/1/0439/1727/9400/files/gepotinutawoli.pdf
    • https://cdn.shopify.com/s/files/1/0428/9839/1196/files/55270289865.pdf
    • https://cdn.shopify.com/s/files/1/0432/0706/5757/files/24417295331.pdf
    • https://cdn.shopify.com/s/files/1/0429/6241/9863/files/vbscript_browse_for_file.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_off0000baa4.bin
568a35bddd3410da826e1b99cadef703a6b5e26a5bda05af0b0b3152e5f55989		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBAA4 5044 bytes
font_01_sfnt_off0000cbdf.bin
b822f9ccfde8126276ed4adf9829c15d81fc82370a7c0f8f12f78d04d8d9b4f1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCBDF 17600 bytes
font_02_sfnt_off00010310.bin
7d13715e99e5f96ba89b89ff33e82348f50d945e3b9e21d67b8a53e320df29ae		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10310 16384 bytes

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