Malicious PDF — malware analysis report

Static analysis result for SHA-256 faef47b402e441ab…

MALICIOUS

PDF

35.4 KB Created: 2020-08-29 22:28:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 650f744ebc19480183d973d9591c2892 SHA-1: 00313bf5600aa76e8dabc87f34cdb117f797c7c2 SHA-256: faef47b402e441ab6ddeec660acd19d96b15fe9ade8d6fba01c5717e481ef785
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, which is also present in the document body. This link, 'https://ttraff.cc/wix?keyword=ak%25C4%25B1ll%25C4%25B1+fen+bilimleri+at%25C3%25B6lyem+6.+s%25C4%25B1n%25C4%25B1f+cevaplar%25C4%25B1', is designed to lure users under the guise of educational content. The file also exhibits characteristics of a link farm, with numerous embedded URLs pointing to external PDF documents, suggesting a broader campaign to distribute malicious content.

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.cc/wix?keyword=ak%25C4%25B1ll%25C4%25B1+fen+bilimleri+at%25C3%25B6lyem+6.+s%25C4%25B1n%25C4%25B1f+cevaplar%25C4%25B1
    • https://static.usrfiles.com/ugd/b8c837_bdc34efc87aa42328f72b61516303866.pdf
    • https://static.usrfiles.com/ugd/b8c837_5ebbf8250bd9413c8ee89fee0159f020.pdf
    • https://static.usrfiles.com/ugd/b8c837_98c42a7bebad40b3bb10e7c6e3deba65.pdf
    • https://static.usrfiles.com/ugd/b8c837_0e48e6ace5ee48cfb4859bc2255ecf25.pdf
    • https://static.usrfiles.com/ugd/3aee12_a9aaab4f2dbc47bba68316dbd42ee293.pdf
    • https://static.usrfiles.com/ugd/576447_87acf43aa30b4c0688c33d26ebab8075.pdf
    • https://static.usrfiles.com/ugd/b8c837_16d40a386dc844cdb4fc434921724c2d.pdf
    • https://static.usrfiles.com/ugd/07625c_9ce08de5c040414ba8f745d816f635fe.pdf
    • https://static.usrfiles.com/ugd/238140_7b37d3209c684a73914e6ab20ac50c8f.pdf
    • https://static.usrfiles.com/ugd/cb5dea_029a1c7917de454fb0b88cfa8a55f46a.pdf
    • https://static.usrfiles.com/ugd/d1d005_b8ffef8cbce041fba20627761decbcda.pdf
    • https://static.usrfiles.com/ugd/b8c837_e84c15c12f9e4d40a939c7ea81608acc.pdf
    • https://static.usrfiles.com/ugd/f4de5e_66d770675b534e54b9b0c35bd7a7a8d6.pdf
    • https://static.usrfiles.com/ugd/b8c837_d70c5c6f37024ce0901cfea14c0efcb7.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_off00004766.bin
e3b195c4bcf1bd9d164cddec810318a35e2927fd408970ec8021e8a57b88b6ad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4766 5872 bytes
font_01_sfnt_off00005b18.bin
fa2ff40f24921fbe8d1929f655dc741e81dcbaed623c540d61d7b2dacbc5829d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B18 11108 bytes

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