Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e5ec8a477632e0b…

MALICIOUS

PDF

34.5 KB Created: 2020-08-20 01:14:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 47759c72607007da21ed1514253a53fd SHA-1: 3683ee80a4aa7ee8b3badcb0a3d00e99290b51e6 SHA-256: 9e5ec8a477632e0b4bbd9aa6c288f8eb89c307b7d815d5f9c704043e3de3ed09
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One of the primary links directs to a known malicious redirector at 'ttraff.ru'. The document body, though partially corrupted, contains the text 'Best meme templates ever' and the malicious URL, suggesting a lure to disguise the malicious intent. The file is identified as a PDF redirector, indicating it's designed to lead users to malicious sites.

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/pify?keyword=best+meme+templates+ever
    • http://files.saintpadrepio.ca/uploads/1/3/1/4/131454505/3812091.pdf
    • http://komawun.rushingspringshoa.com/uploads/1/3/1/6/131636725/832872.pdf
    • http://jojenax.rscollegesupport.org/uploads/1/3/1/6/131606490/dupatomugaveli.pdf
    • https://cdn.shopify.com/s/files/1/0437/3587/5749/files/against_all_grain_cookbook.pdf
    • https://cdn.shopify.com/s/files/1/0434/6842/3334/files/52510389440.pdf
    • https://cdn.shopify.com/s/files/1/0435/7524/7003/files/63326161949.pdf
    • https://cdn.shopify.com/s/files/1/0429/7195/5351/files/7911082055.pdf
    • https://cdn.shopify.com/s/files/1/0433/9109/0844/files/piwokivap.pdf
    • https://cdn.shopify.com/s/files/1/0434/0088/8483/files/3462630608.pdf
    • https://cdn.shopify.com/s/files/1/0431/0525/5586/files/bending_moment_formula_for_simply_supported_beam.pdf
    • https://cdn.shopify.com/s/files/1/0430/5593/9733/files/61588426848.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/26433336276.pdf
    • https://cdn.shopify.com/s/files/1/0431/0623/8613/files/pidof.pdf
    • https://cdn.shopify.com/s/files/1/0429/9322/1783/files/22316947864.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_off000049b4.bin
5695683a278e83090021b88069464582a6f2cdb76c7893b7b9627055f9187620		 pdf-font-stream PDF embedded font (sfnt) at offset 0x49B4 5072 bytes
font_01_sfnt_off00005ade.bin
abf6b687e52abcbf8816ae2e1b640cf926e4e7fff5f2bed788eeffd9cf8fe5b4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5ADE 10208 bytes

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