Malicious PDF — malware analysis report

Static analysis result for SHA-256 3cf74b6cbee79faf…

MALICIOUS

PDF

36.5 KB Created: 2020-08-14 11:54:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 017e6b1cf64c8f99324495229123c84d SHA-1: 9cb1e78c43c3d32efa6939924c084cde64d30552 SHA-256: 3cf74b6cbee79faf663f85905fa8646c9d1d35fc31dac246f9160f51516636f8
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=dog+bandana+pattern+pdf' which is flagged as a malicious redirector. The presence of numerous other links, many pointing to Shopify domains, suggests a link farm designed to obscure the ultimate destination and potentially distribute malware or phish for credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=dog+bandana+pattern+pdf
    • http://files.whitewater101.com/uploads/1/3/2/6/132681993/femiw_baduvuwilis_fudokoduz_woponatili.pdf
    • http://pujuzuzep.sancreedcottage.com/uploads/1/3/1/6/131606000/basifugeged.pdf
    • http://zogonanew.boissys.com/uploads/1/3/1/6/131606490/nefojejonaketemu.pdf
    • https://cdn.shopify.com/s/files/1/0427/7927/9527/files/82943021252.pdf
    • https://cdn.shopify.com/s/files/1/0437/2565/2117/files/maestro_ozawa_crossword.pdf
    • https://cdn.shopify.com/s/files/1/0432/2636/6111/files/bunulikefi.pdf
    • https://cdn.shopify.com/s/files/1/0437/1054/6070/files/xixenimekivo.pdf
    • https://cdn.shopify.com/s/files/1/0433/7562/4350/files/4061585012.pdf
    • https://cdn.shopify.com/s/files/1/0431/2819/3184/files/xiluzedegita.pdf
    • https://cdn.shopify.com/s/files/1/0437/5409/4753/files/5906897681.pdf
    • https://cdn.shopify.com/s/files/1/0431/5080/3099/files/kirisizavefi.pdf
    • https://cdn.shopify.com/s/files/1/0446/3240/8227/files/blauwe_plekken.pdf
    • https://cdn.shopify.com/s/files/1/0447/9670/6967/files/livre_cuisine_algrienne.pdf
    • https://cdn.shopify.com/s/files/1/0429/2270/5055/files/kujatatavuruk.pdf
    • https://cdn.shopify.com/s/files/1/0434/7035/6632/files/84102192940.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_off0000511b.bin
4c03c8f7bae60c8ae167e9131fcd3db65fc6c31638cdc33ceeb355a8ffca8dbe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x511B 5136 bytes
font_01_sfnt_off000062a3.bin
39af87456b70a03e6bfc224a2284c9c9469033ecfbb0efc4ec0b0e02f3d6cd07		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62A3 10076 bytes

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