Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e064b6c70c0b7b4…

MALICIOUS

PDF

47.4 KB Created: 2020-09-19 05:36:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b7254ac59fde879a7ed97bc3380a2494 SHA-1: 1d2804b386b8ba0c0d91712d377602c73e6959fa SHA-256: 9e064b6c70c0b7b45d5f2a27f8295c11ecbdcec4a3c7cfea8a6c7d9624afcde0
150 Risk Score

Malware Insights

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

The PDF contains a large number of external links, with one identified as a malicious redirector. The ML classifier also strongly indicated maliciousness. The embedded URL 'https://ttraff.link/wix?keyword=multidisciplinary+team+definition' is likely used to lure victims into clicking through to a malicious site. The PDF structure and link farm suggest a phishing or malware distribution attempt.

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.link/wix?keyword=multidisciplinary+team+definition
    • http://files.saferoptions.org/uploads/1/3/0/7/130775484/luvejagabex-rabuk-rivuzol.pdf
    • https://1607a176-866d-416e-868c-c101f3763eef.filesusr.com/ugd/3801ff_e849a4579bfc46758270f74d61f472c3.pdf?index=true
    • https://644ae01a-c0ed-47d0-acd2-31389bbfe2e0.filesusr.com/ugd/3bcfef_12fe594a20f345d4a7ca839ce4da647e.pdf?index=true
    • https://b452d0ab-76c4-4f42-89c7-e59782208a15.filesusr.com/ugd/26938b_c81857425bfa468584db84aa8a82a4a4.pdf?index=true
    • https://b984e060-d088-4330-ab29-fe688bacc2ac.filesusr.com/ugd/610d21_583f4282ca8b4bf0a3be6719c02537c1.pdf?index=true
    • https://2d266095-6c5b-4306-bb6b-72aea7a10987.filesusr.com/ugd/c836c3_62798d665c30428ead94fe46dcda21d3.pdf?index=true
    • https://5ca1240e-af7f-43af-8ec9-a57d0ec22d42.filesusr.com/ugd/aaaf79_1c3d5ecd5a0043a8ba9a4ec027488b41.pdf?index=true
    • https://2efa6573-0b08-4293-851b-e9b909719b20.filesusr.com/ugd/2eedf1_6a9e033e86bc4f81b2a23a01b1b2a833.pdf?index=true
    • https://0a12837f-5ce7-4d36-b6c1-cf9f2404894b.filesusr.com/ugd/4bdc6d_fa816644f4244454a5fed3d3ec6e8a1b.pdf?index=true
    • https://1c0ea213-dd59-4a61-8aae-462389226ce0.filesusr.com/ugd/696117_85fbf0b6c786431d824f579fb31e9018.pdf?index=true
    • https://a015da39-8f80-4c22-83db-3138129cc4b6.filesusr.com/ugd/89c6ad_cb1ef12fe30e4c08acf755dadf37a608.pdf?index=true
    • https://027f6994-0072-45a3-8183-ff2edfb0323e.filesusr.com/ugd/7be1cd_fccc51e6dc594dc5b70c005a2a51a1a0.pdf?index=true
    • https://eae8e39d-f562-41b8-9266-08a49ff77642.filesusr.com/ugd/1e11d0_288e0f32133e4d41a308cafcc22d0dc5.pdf?index=true
    • https://b5cdbceb-65dd-4fe4-bc9c-522aa951dd05.filesusr.com/ugd/943725_e9664b214a5b4d3d935a93f9130a385f.pdf?index=true
    • https://6328329e-8bbc-453e-8852-9239a6ac1ee1.filesusr.com/ugd/6f9b04_cacce061cfa54488a19fe176b56327ab.pdf?index=true
    • 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_off0000789b.bin
338fd82b3d333b0e80009cee1d151f3524453f3cd609cf7ff445f7ba1bf9c18b
pdf-font-stream PDF embedded font (sfnt) at offset 0x789B 5408 bytes
font_01_sfnt_off00008afd.bin
c4b1f4b4c97e81ff5866ffdd5cb3369949a1c39f440cc877e6f53ac6d13e438d
pdf-font-stream PDF embedded font (sfnt) at offset 0x8AFD 11136 bytes