Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca27ee663752a3e5…

MALICIOUS

PDF

39.9 KB Created: 2020-08-30 01:54:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b1b6423d3909dd237627b6a0478d1244 SHA-1: c9dc797abb0ed69eee5f2a0e6bb3ebf3289c78ef SHA-256: ca27ee663752a3e5c27ac41de7b95f43c4885418631fdbad780fb05ff648147b
150 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector at 'ttraff.com'. The document body, though heavily obfuscated, contains text related to 'Webcam dornbirn messepark' and the malicious URL, suggesting a lure to a potentially malicious site. The presence of a link farm further supports the malicious intent.

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/wix?keyword=webcam+dornbirn+messepark
    • https://static.usrfiles.com/ugd/b88e3d_7fbde2d24e0e4f70a67ed09bd53a6217.pdf
    • https://static.usrfiles.com/ugd/930050_3aeee2a4cf414bdfa3f5210cff74f3c6.pdf
    • https://static.usrfiles.com/ugd/576447_358be4a87822493dbdd21b032bad9ef0.pdf
    • https://static.usrfiles.com/ugd/8cbfce_a5a86da0794b4601893567a33588a125.pdf
    • https://static.usrfiles.com/ugd/48d9a1_473dec14915c4c968ef913b2bead8b25.pdf
    • https://static.usrfiles.com/ugd/b8c837_05993c81144f4aa2b98467f1fba49b0c.pdf
    • https://static.usrfiles.com/ugd/b8c837_66c3b32e43b14a329f38f6bb90c72a2d.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/japoxotoruzub.pdf
    • https://cdn.shopify.com/s/files/1/0436/9612/8153/files/8258395479.pdf
    • https://cdn.shopify.com/s/files/1/0427/5086/9671/files/40634517007.pdf
    • https://cdn.shopify.com/s/files/1/0431/6410/6908/files/mepovox.pdf
    • https://cdn.shopify.com/s/files/1/0431/5440/7578/files/55254188350.pdf
    • https://cdn.shopify.com/s/files/1/0427/4506/9724/files/69765044344.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_off00004ef2.bin
11e8afaa36750b997b9bd5e3fa1d1426d57ad02e52b5acbeef35cbd3d87013c5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4EF2 5404 bytes
font_01_sfnt_off00006145.bin
3ad1a21de4baf59bf4720c559cac4494085928438b22f337f3479db7e6bc2428		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6145 15328 bytes

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