Malicious PDF — malware analysis report

Static analysis result for SHA-256 a542c302e5084b63…

MALICIOUS

PDF

44.8 KB Created: 2020-09-04 14:31:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 739bbd067b87fd5f5901b0f74090ef5c SHA-1: 6fadcbbaf0c91e6e7f7733978c7bd98ed65f6a66 SHA-256: a542c302e5084b631b4d1d9ec3c223f6bbaed33a516adf175899c2c72f9aa553
120 Risk Score

Malware Insights

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

The PDF file contains a malicious redirector link that points to a URL designed to lure users into clicking it. The document body, though heavily obfuscated, contains text related to a 'hailsham community college ofsted report' and the malicious URL itself. This suggests a phishing or social engineering attack aiming to redirect the user to a compromised site.

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.me/pify?keyword=hailsham+community+college+ofsted+report
    • https://static.usrfiles.com/ugd/432b07_df3e0f74a7254df7b4da967d20847bc3.pdf
    • https://static.usrfiles.com/ugd/6a7407_9258e282d4f941e1ad28f0ad7c40fee1.pdf
    • https://static.usrfiles.com/ugd/c618e9_85df16cffd384e229c321d0cd89e82f5.pdf
    • https://static.usrfiles.com/ugd/ac72e0_f60813d9756f40369aa101d45acb3daf.pdf
    • https://cdn.shopify.com/s/files/1/0431/8222/7617/files/22793943199.pdf
    • https://cdn.shopify.com/s/files/1/0465/0768/8086/files/adornos_de_navidad_2018_manualidades.pdf
    • https://cdn.shopify.com/s/files/1/0431/8419/3697/files/worksheet_for_grade_1.pdf
    • https://cdn.shopify.com/s/files/1/0434/5082/6919/files/74390978689.pdf
    • https://static.usrfiles.com/ugd/b8c837_009e0784c76c4ce68dacbc7b7116786b.pdf
    • https://static.usrfiles.com/ugd/e5a943_3191fae40c2c4aebae2f80675cb2d13e.pdf
    • https://static.usrfiles.com/ugd/665c20_a0412a76401e45968fa4a54e0dd49e83.pdf
    • https://static.usrfiles.com/ugd/55cc32_4cfcb6683fad4465b545c054e537c806.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_off000065c8.bin
bcecb1b058390c1ca7a4549de41bedc946b6cd10e5155ed8d019bc25dc46b22b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65C8 5632 bytes
font_01_sfnt_off000078cd.bin
c81de4a030d80e2551c86bd286a15e32beb9c46e23bca2804d77c1f026319e23		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78CD 14832 bytes

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