Malicious PDF — malware analysis report

Static analysis result for SHA-256 a367db1e3675f269…

MALICIOUS

PDF

42.9 KB Created: 2020-08-30 06:14:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b9bebe1db36bc17d020f7fe9aef1a26d SHA-1: f0ba98d33d2395e00ab22daf5d434a9a3db4bcd8 SHA-256: a367db1e3675f269b96719851278f995694c0fc81dd019ebc625cea26ba1a45a
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to domains associated with link farms and redirectors. The primary malicious link, https://ttraff.com/wix?keyword=caligari+truespace+5+free, is identified as a redirector to potentially malicious infrastructure. The document's structure and content suggest an attempt to lure users into clicking through to external sites, likely for malicious purposes such as phishing or malware 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/wix?keyword=caligari+truespace+5+free
    • https://static.usrfiles.com/ugd/b8c837_51daf907da9847f090bb1f03e0535f51.pdf
    • https://static.usrfiles.com/ugd/ea2f88_39c48c04d21b45648ada3dbdbf8073dd.pdf
    • https://static.usrfiles.com/ugd/97aff7_e648d44101c54a90b3c4bfb35488b769.pdf
    • https://cdn.shopify.com/s/files/1/0438/1966/3522/files/semano.pdf
    • https://static.usrfiles.com/ugd/b8c837_0ee62c131f8448449de202204ebdcb1c.pdf
    • https://static.usrfiles.com/ugd/8d57bd_3b46b7bb1dd44d0fa7c9c3649d8da82f.pdf
    • https://static.usrfiles.com/ugd/b8c837_354df30bc46644f79a13d221175f54f0.pdf
    • https://static.usrfiles.com/ugd/ce0e6d_7813e1b478b24e8da97f398bcde350fa.pdf
    • https://static.usrfiles.com/ugd/5fd5c1_a7d6e96e558f485c86e65c991bd740ae.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_off00006956.bin
04a5552ba2861f8757dbb2877ea923d0097777273882da6d21a80bea959d2a6b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6956 5212 bytes
font_01_sfnt_off00007b2d.bin
6babd2ae9caeaa0b7a36b094148ce6f0c7d8d62f257baca6c59aa89970489975		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B2D 10736 bytes

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