Malicious PDF — malware analysis report

Static analysis result for SHA-256 228d49ae2e4e78f2…

MALICIOUS

PDF

41.9 KB Created: 2020-07-27 05:18:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 04cc76090e8a8c73b86e7fdeb6c02d07 SHA-1: 49b04476be1efdf9e828173552a469e1cdb3d074 SHA-256: 228d49ae2e4e78f200a6b5f08a69811bf0f479e99452183071140ce49b0fb719
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits a PDF link farm with numerous external links, many hosted on 'cdn.shopify.com'. The ML classifier also strongly flagged this PDF as malicious. These indicators suggest the document's primary purpose is to redirect users to potentially harmful content or facilitate further malicious distribution.

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=chakra+symbols+free
    • http://files.debsharratt.co.uk/uploads/1/3/1/4/131452824/rakivu_xudukujivoruduv.pdf
    • http://files.lonepinefarmnubians.com/uploads/1/3/1/3/131384025/91bd5e1.pdf
    • http://files.4peggy.com/uploads/1/3/2/6/132695919/gixuxogawonadif_fixexexebev_rikozexozip_pifesetupamar.pdf
    • http://files.marshallterrace.org/uploads/1/3/0/9/130969300/a2f715ef10ff76.pdf
    • https://cdn.shopify.com/s/files/1/0431/1220/2389/files/77697594468.pdf
    • https://cdn.shopify.com/s/files/1/0439/4228/1371/files/walofudat.pdf
    • https://cdn.shopify.com/s/files/1/0428/0002/1667/files/sewajuwubovugizodut.pdf
    • https://cdn.shopify.com/s/files/1/0430/9309/8660/files/64939359070.pdf
    • https://cdn.shopify.com/s/files/1/0439/2307/9323/files/92807258847.pdf
    • https://cdn.shopify.com/s/files/1/0427/8360/4903/files/datopipodugikedopokivizum.pdf
    • https://cdn.shopify.com/s/files/1/0433/6504/0282/files/nusiwebulofomaxu.pdf
    • https://cdn.shopify.com/s/files/1/0428/0185/6668/files/6114297468.pdf
    • https://cdn.shopify.com/s/files/1/0434/4525/6344/files/posowuxawigi.pdf
    • https://cdn.shopify.com/s/files/1/0432/1958/3138/files/jupeneg.pdf
    • https://cdn.shopify.com/s/files/1/0434/9739/0244/files/kokupubusilevetepamu.pdf
    • https://cdn.shopify.com/s/files/1/0440/5493/7765/files/kefela.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/
    • https://cdn.shopify.com/s/files/1/0439/2307/9323/fi

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005ab1.bin
1dea73b2b482bdaa6cc0450856fa1cb138f44194ecdf54c34a051e27792e4e99
pdf-font-stream PDF embedded font (sfnt) at offset 0x5AB1 4888 bytes
font_01_sfnt_off00006b4f.bin
fd5572826fa26c0cb1cae45d8e7ffad32a780db8bba182f05a567a69970661bc
pdf-font-stream PDF embedded font (sfnt) at offset 0x6B4F 3116 bytes
font_02_sfnt_off000077bd.bin
8241898b3358655f586ddd1c955543db9e718a9fad4969b1bed477df5eb1edee
pdf-font-stream PDF embedded font (sfnt) at offset 0x77BD 10140 bytes