Malicious PDF — malware analysis report

Static analysis result for SHA-256 52b06c766ee1a50c…

MALICIOUS

PDF

108.1 KB Created: 2020-08-29 22:42:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c217f65d40e264867a3ba3d1cfe74cd9 SHA-1: bed9867d5a33ff77f24c0650bb88f10f2750237d SHA-256: 52b06c766ee1a50cc2d221e2e2b8f393e24a0c2e3917ad5a12a5edef513a94b9
150 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one heuristic specifically identifying it as a 'PDF_SEO_LINK_FARM'. The primary malicious URL identified, 'https://ttraff.link/wix?keyword=soviet+abiogenesis+experiment', is flagged as a known malicious redirector. While no scripts were extracted, the structure and the malicious redirector link suggest a delivery mechanism for further malicious content or phishing attempts.

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.link/wix?keyword=soviet+abiogenesis+experiment
    • https://static.usrfiles.com/ugd/5de1df_9d1e0c3521bb4343bebf82783e3fb2ad.pdf
    • https://static.usrfiles.com/ugd/238140_1966c139b66149a69a4ad2f1a8d5b6f6.pdf
    • https://static.usrfiles.com/ugd/b8c837_7471b1917eb94287b999ede0c3e7c742.pdf
    • https://static.usrfiles.com/ugd/b8c837_d631bdfaf9c048e89612939bdd705551.pdf
    • https://static.usrfiles.com/ugd/b8c837_0baaca926a4b41ed9267a0788c30439f.pdf
    • https://static.usrfiles.com/ugd/2ac701_c56bc6131de3418a8c1ee13742a116d1.pdf
    • https://static.usrfiles.com/ugd/b8c837_65257470cdfa4353843b286775c9c074.pdf
    • https://static.usrfiles.com/ugd/b8c837_155f005baacd4690a738d3a607fe220a.pdf
    • https://static.usrfiles.com/ugd/b8c837_1ab2000b8d6042e19db345e48f2bcbda.pdf
    • https://static.usrfiles.com/ugd/b8c837_6664b1be210a4483b4d4a3ef414dfdfb.pdf
    • https://static.usrfiles.com/ugd/b8c837_94c6fcdc89a74530a984ef6cc04e137d.pdf
    • https://static.usrfiles.com/ugd/b8c837_0f59dcc6f09e496f9b992b449d9a0371.pdf
    • https://static.usrfiles.com/ugd/9219f8_37063b1f790f41988e941b51597ac077.pdf
    • https://cdn.shopify.com/s/files/1/0435/0155/1771/files/wozenatarafatawera.pdf
    • https://cdn.shopify.com/s/files/1/0440/1093/0341/files/luvedilerenuvivagofavun.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_off00016d0e.bin
ed4c3bdbda8800339fc2bda0345bf890c3600d7459e4e0fed2b9e6e29b353f86		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16D0E 5476 bytes
font_01_sfnt_off00017f9d.bin
0707bce9d9c4aed89a636b5dcdd2d27ca5b605373ac273d3a89d5d5ddab001b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17F9D 10304 bytes

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