Malicious PDF — malware analysis report

Static analysis result for SHA-256 4cf2813c792a099b…

MALICIOUS

PDF

35.1 KB Created: 2020-09-01 01:30:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8c3d5525cf63bb8267a3cfe3b4da5111 SHA-1: a96ccb41270ffc728d521ca7681e769592792343 SHA-256: 4cf2813c792a099b70c3f28c1ab5d708894363eaee473cb0afa05945845b4600
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a common tactic for SEO poisoning and redirecting users to malicious sites. One prominent link, 'https://ttraff.com/wix?keyword=blackpink+boombayah++ilkpop', is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL and other links pointing to a large PDF link farm, suggesting a coordinated effort to drive traffic to potentially harmful content.

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=blackpink+boombayah++ilkpop
    • https://static.usrfiles.com/ugd/cafc24_ca80012e94f449139361082fba7b75a8.pdf
    • https://static.usrfiles.com/ugd/30e015_327d0eb9cb854fc196e2083df1c5de98.pdf
    • https://static.usrfiles.com/ugd/f523c3_010085e4f58147ccb7f8f1b76f0f0c0f.pdf
    • https://static.usrfiles.com/ugd/c068f8_adff1221b07648828cc3b84b2d4398da.pdf
    • https://cdn.shopify.com/s/files/1/0429/8906/0259/files/aromatic_plants_cultivation_processing_and_uses.pdf
    • https://cdn.shopify.com/s/files/1/0434/9850/4354/files/ridusudebigisujuxowisiwe.pdf
    • https://cdn.shopify.com/s/files/1/0427/5165/6102/files/pogoresizulonutinis.pdf
    • https://cdn.shopify.com/s/files/1/0434/1222/6206/files/zutakupusitumeluzewuv.pdf
    • https://cdn.shopify.com/s/files/1/0439/8222/5566/files/direvometixemovi.pdf
    • https://cdn.shopify.com/s/files/1/0440/4799/0934/files/19098864052.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_off00004034.bin
6ffd9e0c9e513dec79904c27111dd07f1494c9dec171650a3b62c1f9fd540fbf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4034 3192 bytes
font_01_sfnt_off00004b8f.bin
1cfde89df6da965b0bef6043297f3739f6810b672660a8551b888641a5dccfdc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4B8F 5252 bytes
font_02_sfnt_off00005d55.bin
8e5884599426de8aec402687a4e70655e7d7ed5a94d56a56d24f76c1c59901f6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D55 10000 bytes

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