Malicious PDF — malware analysis report

Static analysis result for SHA-256 40027f6ed261717a…

MALICIOUS

PDF

41.0 KB Created: 2020-09-17 02:41:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 68371f208424408880634e73e52ce959 SHA-1: b39d8083ec8076563cdffb6fdd73cd90fc79fc8b SHA-256: 40027f6ed261717ad768481177c06e15f78c4a3fc99a9898e5e8c4f27a151f1f
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to suspicious domains and are likely part of an SEO link farm. One prominent URL, 'https://ttraff.club/wix?keyword=water+ridge+kitchen+faucet+replacement+parts', is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting the primary intent is to redirect users to malicious infrastructure under the guise of providing search 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.club/wix?keyword=water+ridge+kitchen+faucet+replacement+parts
    • http://puxufuxen.nadinebertalli.com.au/uploads/1/3/0/7/130775413/a42a6c.pdf
    • http://nadebiver.slykerfamilyministry.com/uploads/1/3/1/3/131380213/juberisal.pdf
    • http://tabipomu.karlijnpostma.com/uploads/1/3/1/8/131871493/2a9e5a0d3db.pdf
    • http://files.stevenkriegerlaw.com/uploads/1/3/0/7/130775429/4302577.pdf
    • http://files.biggsbassethounds.com/uploads/1/3/1/8/131857071/84fb7a2093dbc.pdf
    • https://cdn.shopify.com/s/files/1/0430/3552/5282/files/nawujawinite.pdf
    • https://cdn.shopify.com/s/files/1/0461/7266/8057/files/7697023511.pdf
    • https://cdn.shopify.com/s/files/1/0447/1803/1002/files/aliens_3_movie_free.pdf
    • https://dfafa0aa-4943-4f0a-a861-fccb8caaf662.filesusr.com/ugd/24d943_4a69adc4d49a4016919fc61449d8887d.pdf?index=true
    • https://1fcba8f2-63ca-4c12-92a7-9c824f5d14c2.filesusr.com/ugd/5b5da7_b58b6cf7e2854a58af8cc56d55a847d6.pdf?index=true
    • https://6ed66ad2-d5dc-42e3-8bef-961a581e2379.filesusr.com/ugd/66f3f9_f546d387e2004fcb877c9e30265deca0.pdf?index=true
    • 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_off000060ce.bin
a87877cee4f7b604734b1854718f189adb8594a50a2f58c1087c4a5998c4c264		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60CE 5648 bytes
font_01_sfnt_off000073f0.bin
5da2e4e915e502031c30bf25b86a02a62585265e40093378b8608cf66a7bf937		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73F0 10268 bytes

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