Malicious PDF — malware analysis report

Static analysis result for SHA-256 a108db004353f899…

MALICIOUS

PDF

117.5 KB Created: 2020-08-29 23:52:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e27d92f7d51eb07136852a5ee5a43fb8 SHA-1: ef03dc2c45a29e642f11f5205ce2e3a59acc2ef4 SHA-256: a108db004353f899402037a69f8554179e4e7c721f97c3fb84fb054caf4f58a3
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF file contains a link to a known malicious redirector, ttraff.ru, which is likely intended to lead the user to a malicious payload. The presence of a 'download button' heuristic further supports a social engineering lure. While no scripts were extracted, the PDF structure and embedded malicious link strongly suggest a phishing or malware delivery attempt.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/wix?keyword=raptor+660+engine+diagram
    • https://cdn.shopify.com/s/files/1/0435/0348/5092/files/35647061976.pdf
    • https://cdn.shopify.com/s/files/1/0431/6066/6274/files/55454851730.pdf
    • https://cdn.shopify.com/s/files/1/0437/5294/7863/files/62739705686.pdf
    • https://cdn.shopify.com/s/files/1/0465/3845/7238/files/38686418324.pdf
    • https://cdn.shopify.com/s/files/1/0430/5689/0013/files/nemasiwo.pdf
    • https://static.usrfiles.com/ugd/760101_2f4f300dbbe74a7db9b972796bfeaa5b.pdf
    • https://static.usrfiles.com/ugd/b8c837_09eb44ff6261448a9168e17322fdcf36.pdf
    • https://static.usrfiles.com/ugd/b8c837_3071b7d37d304df2b872c21493b74e10.pdf
    • https://static.usrfiles.com/ugd/b8c837_00b6ff0e20ef4ff3aac1cfb58fd1f02b.pdf
    • https://static.usrfiles.com/ugd/b8c837_65e00add5f7e4f819b732a07367ea238.pdf
    • https://static.usrfiles.com/ugd/b8c837_6ca9ee3b85aa4b28a40204dbd0cb6a60.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_off000186b2.bin
1e13ef7284afd4a61d0400b164941dbcf500d52b853ef086caa2c9cfa73e1c6e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x186B2 5372 bytes
font_01_sfnt_off000198dc.bin
fae992a2398afa16319127b8276686bc48b309519d5bd3d69ab41f272c0cfe1f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x198DC 15504 bytes

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