Malicious PDF — malware analysis report

Static analysis result for SHA-256 59314007e9687cd1…

MALICIOUS

PDF

85.9 KB Created: 2020-09-09 02:42:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 47cd2f23819facc5c6b8657a89a4800c SHA-1: 7cc0aeabf60634f2813210446f5b661dfb49ea1e SHA-256: 59314007e9687cd1efe5cb9ec21636aa09d8cbb79eb2da6558c3efa6e1dbd1e3
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, a technique often used for SEO poisoning or to redirect users to malicious sites. One of the embedded URLs, 'https://ttraff.com/wix?keyword=canvas+draw+text+in+rectangle+android', is flagged as a known malicious redirector. The document body contains garbled text and metadata indicating it was generated by wkhtmltopdf, suggesting it's not a legitimate document but rather a container for malicious links.

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=canvas+draw+text+in+rectangle+android
    • https://static.usrfiles.com/ugd/cec570_ee8e783bf4904856987e1fdc7dff2ab2.pdf
    • https://static.usrfiles.com/ugd/89064d_cdc2ea2711ac452697e81ca10b0c6384.pdf
    • https://static.usrfiles.com/ugd/838e7e_f7899695983e49d8871553c137490850.pdf
    • https://cdn.shopify.com/s/files/1/0430/9070/6599/files/business_mathematics_notes_for_b._com_2nd_year.pdf
    • https://cdn.shopify.com/s/files/1/0430/7140/6237/files/55831411897.pdf
    • https://cdn.shopify.com/s/files/1/0431/7518/2496/files/partnership_deed_kenya.pdf
    • https://static.usrfiles.com/ugd/28b3f7_d7b9ae0cb91846f1a3bb2580a1515b3e.pdf
    • https://static.usrfiles.com/ugd/4cd51e_18685df03d384c94ad9060ede561fe9c.pdf
    • https://static.usrfiles.com/ugd/28146e_bb9da6971e2943dd96b9d6ae7e264042.pdf
    • https://static.usrfiles.com/ugd/61f964_da8819201a49432ea2c1ad4b26fa5c0b.pdf
    • https://static.usrfiles.com/ugd/81d6a4_da5591dff0de4a6f80710ad51d0c2c24.pdf
    • https://static.usrfiles.com/ugd/7dfe85_c2970ee24ca444e38ba135d55391187a.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_off00011689.bin
5860f227d1b79b12738e9b37abe0f722e11d4e6806b330716c1c096bb8cbffd9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11689 5232 bytes
font_01_sfnt_off00012878.bin
17464b9beab9a54d751e078769093c9014f6a65f6b19603fe94a66a6e55f6abb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12878 9948 bytes

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