Malicious PDF — malware analysis report

Static analysis result for SHA-256 efd74800d961e752…

MALICIOUS

PDF

25.4 KB Created: 2019-04-29 23:07:18 +01:00 Authoring application: mPDF 5.7
MD5: b282781916b6ff58cf40e213b5db6e95 SHA-1: 3599faa9d8f46229b8660bdfb8f21f5167a18444 SHA-256: efd74800d961e7524d45f1c06bf3eed11658e7466aa062a50893fdd4d0bcdbe2
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or distribution mechanism. While the ML classifier strongly indicates maliciousness, the specific intent beyond hosting links is unclear due to the lack of executable scripts or clear document body content. The URLs themselves are currently marked as benign, but their sheer volume and the heuristic firing point to a malicious purpose, likely related to SEO manipulation or redirecting users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9910

Heuristics 2

  • 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 http://loaminoo.linkpc.net/7090099097098092/A-Manual-for-Communicants-An-Introduction-to-Church-Membership-by-Archibald-F-MacGregor.pdf
    • http://loaminoo.linkpc.net/7090099098093096/The-Manifesto-Church-Records-of-the-Church-in-Brattle-Square-Boston-with-Lists-of-Communicants-Baptisms-Marriages-and-Funerals-1699-1872-by-Church-in-Brattle-Square.pdf
    • http://loaminoo.linkpc.net/7090099098094091/The-Manifesto-Church-Records-of-the-Church-in-Brattle-Square-Boston-With-Lists-of-Communicants-Baptisms-Marriages-and-Funerals-1699-1872-by-Church-in-Brattle-Square-Boston.pdf
    • http://loaminoo.linkpc.net/7090099097093094/AIDS-to-Communion-with-God-A-Manual-for-Communicants-by-Vernon-Wollaston-Hutton.pdf
    • http://loaminoo.linkpc.net/1090099092096094097/The-MacGregor-Trilogy-MacGregor-s-Gathering-The-Clansman-Gold-for-Prince-Charlie-MacGregor-1-3-by-Nigel-Tranter.pdf
    • http://loaminoo.linkpc.net/7099098092090093/Les-Aventures-d-Archibald-Le-Grillon-The-Adventures-Of-Archibald-The-Cricket-by-Patrick-Huet.pdf
    • http://loaminoo.linkpc.net/4099098093094092/The-Secular-Activist-A-How-to-Manual-for-Protecting-the-Wall-between-Church-and-State-by-Dan-Arel.pdf
    • http://loaminoo.linkpc.net/8090097097096099/The-Book-of-Mormon-Student-Manual-Religion-121-122-by-The-Church-of-Jesus-Christ-of-Latter-day-Saints.pdf
    • http://loaminoo.linkpc.net/3096099097099094/The-Fathers-of-the-Church-An-Introduction-to-the-First-Christian-Teachers-by-Mike-Aquilina.pdf
    • http://loaminoo.linkpc.net/7090093091098099/Instructor-s-Manual-Test-Bank-to-Accompany-Introduction-to-Person-by-Phares.pdf
    • http://loaminoo.linkpc.net/1091099092093095090/Solutions-Manual-To-Accompany-Introduction-To-Manufacturing-Processes-by-John-A-Schey.pdf
    • http://loaminoo.linkpc.net/6093091095098094/The-Mystery-of-Faith-An-Introduction-to-the-Teaching-and-Spirituality-of-the-Orthodox-Church-by-Hilarion-Alfeyev.pdf
    • http://loaminoo.linkpc.net/1090099092095090095/MacGregor-s-Gathering-MacGregor-1-by-Nigel-Tranter.pdf
    • http://loaminoo.linkpc.net/8091099096098095/Letters-of-Archibald-MacLeish-1907-to-1982-by-Archibald-MacLeish.pdf
    • http://loaminoo.linkpc.net/8091099096093093/Collected-Works-of-Archibald-Lampman-by-Archibald-Lampman.pdf
    • http://loaminoo.linkpc.net/1090090093099096091/Ireland-and-the-Commonwealth-Towards-Membership-by-Peadar-Cassidy.pdf
    • http://loaminoo.linkpc.net/1090091090094098090/Membership-in-the-House-of-Representatives-amp-Senate-by-P-C-Anila-Namboodiripad.pdf
    • http://loaminoo.linkpc.net/1091099097096095097/Today-s-Technician-Basic-Automotive-Service-and-Systems-Classroom-Manual-and-Shop-Manual-by-Christopher-Hadfield.pdf
    • http://loaminoo.linkpc.net/5094092090097092/Church-Charism-and-Power-Liberation-Theology-and-the-Institutional-Church-by-Leonardo-Boff.pdf
    • http://loaminoo.linkpc.net/4096091093098/The-Book-of-Common-Prayer-and-Administration-of-the-Sacraments-and-Other-Rites-and-Ceremonies-of-the-Church-by-Church-of-England.pdf
    • http://loaminoo.linkpc.net/1090099092096094097/The-MacGregor-Trilogy-MacGregor-s-Gathering-The-C

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