Malicious PDF — malware analysis report

Static analysis result for SHA-256 4006671feabcbd42…

MALICIOUS

PDF

65.9 KB Created: 2020-08-30 15:01:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 848e76ea7290b4143efe62d1356e748a SHA-1: 223d71af7f0299aad84cc4180f9c8e3dcc73ff2b SHA-256: 4006671feabcbd42dfc090abe35861659fdbb81bac15e6a1a43c1884b52b2749
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. Additionally, it exhibits a PDF link farm heuristic, indicating a large number of embedded links, with the primary one leading to the same malicious domain. The document body, though heavily obfuscated, contains the same URL, suggesting it's the primary lure. The file's purpose appears to be directing users to this malicious URL, likely for phishing or malware delivery.

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.ru/wix?keyword=chauffe+eau+thermodynamique+altech+bt300i
    • https://cdn.shopify.com/s/files/1/0463/6606/4801/files/536518709.pdf
    • https://cdn.shopify.com/s/files/1/0432/2420/3424/files/tomozolexakifed.pdf
    • https://cdn.shopify.com/s/files/1/0432/1234/1416/files/51697261721.pdf
    • https://cdn.shopify.com/s/files/1/0429/6019/1641/files/dukuko.pdf
    • https://static.usrfiles.com/ugd/822ecd_facb910624c545f1afe8dd611842a38a.pdf
    • https://static.usrfiles.com/ugd/b8c837_273db06355834ebeb9bc3451295e22a3.pdf
    • https://static.usrfiles.com/ugd/c0b427_30069f09a7584f56ab5233009b2f3905.pdf
    • https://static.usrfiles.com/ugd/b8c837_afc8f188e4a548d1bacb7fcad7aeffd4.pdf
    • https://cdn.shopify.com/s/files/1/0435/4762/3592/files/1921134476.pdf
    • https://cdn.shopify.com/s/files/1/0440/8469/1094/files/872983322.pdf
    • https://cdn.shopify.com/s/files/1/0441/4029/8392/files/84729095721.pdf
    • https://cdn.shopify.com/s/files/1/0431/1760/9122/files/18042000984.pdf
    • https://cdn.shopify.com/s/files/1/0430/2379/4337/files/wukepi.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_off0000c144.bin
d7de6885ab330d5edb24884bc4dd20efa7916465134b1bf4fa5e58bf01cf5a4a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC144 5664 bytes
font_01_sfnt_off0000d46d.bin
52272f9582e0d94ca5680a2b928f254479861dbcc0ae09702229ae8e3ab68893		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD46D 11392 bytes

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