Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c38e25ed77a3a2d…

MALICIOUS

PDF

64.4 KB Created: 2020-08-31 11:55:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a858b3b8bcba809f197aade318d8d7e0 SHA-1: aa924a042f51f4b32e629b84cdfc02e4cd8528be SHA-256: 9c38e25ed77a3a2d2f40e89bf710a3dc539eca914b2aea29597cc0f66256933d
150 Risk Score

Malware Insights

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

The PDF file contains a malicious redirector link that points to a link farm, indicating a phishing or social engineering attempt. The ML classifier strongly supports the malicious nature of the file. The embedded URL is the primary indicator of compromise, likely leading to further malicious content or phishing pages.

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.ru/wix?keyword=chariot+of+the+gods+pdf
    • https://static.usrfiles.com/ugd/0f1814_f4a14c22139e43a9b06da1dafb5b330b.pdf
    • https://static.usrfiles.com/ugd/b9801a_a15742eb086c457cb946389ca12bc49c.pdf
    • https://static.usrfiles.com/ugd/b8c837_3694562c2f81490580e07062b122b439.pdf
    • https://static.usrfiles.com/ugd/b8c837_a77fcee47bbc407a82ad57eb7e063926.pdf
    • https://static.usrfiles.com/ugd/0c8cc8_9d84d6cae14248e9928bf0759b032216.pdf
    • https://static.usrfiles.com/ugd/a18aa6_1824b7d2787c42288757d793af2da1f9.pdf
    • https://static.usrfiles.com/ugd/aa14a9_302e6da555a54b8b8820cffb8492bc08.pdf
    • https://static.usrfiles.com/ugd/b8c837_d5182bc9d0404bffb1f455fad50feba8.pdf
    • https://static.usrfiles.com/ugd/b8c837_61aead6d60824e048b7a574f62f2de6a.pdf
    • https://static.usrfiles.com/ugd/067ecb_cab2c1827b4749c6942218a0fb29cc71.pdf
    • https://static.usrfiles.com/ugd/197ed4_58f797ab76e2492885c4609cd28ad5ea.pdf
    • https://static.usrfiles.com/ugd/b65acf_15ea877d9e334dc4814e0df8019e72eb.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008763.bin
3282c800098b0e7eb8ee917dadbb9c5c3c01477b0d8f3165941c59df85bf1070		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8763 10276 bytes
font_01_sfnt_off0000a902.bin
31fa9ad4ecf5a75accb8401e4efa749b22f87dfeb58f83dd9f6215632e45df75		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA902 4976 bytes
font_02_sfnt_off0000ba0b.bin
08a9977c4ad1db024128fdae03a784365744f9c3737e00dcd5fcf20c9285a5e7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBA0B 13852 bytes
font_03_sfnt_off0000e665.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE665 4324 bytes

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