Malicious PDF — malware analysis report

Static analysis result for SHA-256 de466bf1e3e1a61f…

MALICIOUS

PDF

45.8 KB Created: 2020-08-24 05:54:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5788a0d6330290135995e4d29cf7b045 SHA-1: fa20c1571a976b83adbe23a46576bafde2710798 SHA-256: de466bf1e3e1a61feed96952f3f382abc30d4237e5a341c88ab5118582fb0cdf
120 Risk Score

Malware Insights

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

The PDF file contains a link farm and a specific URL pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a lure related to a school report. The primary attack vector is likely social engineering via a malicious link embedded within the PDF, aiming to redirect the user to harmful 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.com/pify?keyword=lyndon+school+solihull+ofsted+report
    • http://files.americancatalyst.org/uploads/1/3/1/4/131452824/pijabiraworufoji.pdf
    • https://cdn.shopify.com/s/files/1/0431/3523/8301/files/zajovadaliso.pdf
    • https://cdn.shopify.com/s/files/1/0435/1560/9243/files/48185349106.pdf
    • https://cdn.shopify.com/s/files/1/0438/3680/1181/files/cfa_curriculum_books_2019.pdf
    • https://cdn.shopify.com/s/files/1/0431/1423/4016/files/roromasolikevebivi.pdf
    • https://cdn.shopify.com/s/files/1/0450/6897/6291/files/bufafazetapi.pdf
    • https://cdn.shopify.com/s/files/1/0432/1129/2829/files/49680141394.pdf
    • https://cdn.shopify.com/s/files/1/0434/6806/2872/files/zobovutifulotatexopaxizaj.pdf
    • https://cdn.shopify.com/s/files/1/0430/0950/7487/files/55090518074.pdf
    • https://cdn.shopify.com/s/files/1/0429/8063/8879/files/functions_of_computer_keyboard_keys.pdf
    • https://cdn.shopify.com/s/files/1/0461/8980/5731/files/splashtop_wired_xdisplay_apk.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_off000069bf.bin
0149be7aace487357908c46a437cb85f13fa5d5de25ab19c6c230f168b097ff7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69BF 5076 bytes
font_01_sfnt_off00007b03.bin
2d877267217c05506caf52ad12608f737b2249dc181635c3bbfa42fa51a08f6e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B03 15284 bytes

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