Malicious PDF — malware analysis report

Static analysis result for SHA-256 f52caaece08c6326…

MALICIOUS

PDF

21.9 KB Created: 2019-04-30 04:07:18 +01:00 Authoring application: mPDF 5.7
MD5: 280397918da9ce3fea3d60e6a9e7320a SHA-1: 96dd6afa5eed9af7103a25555300e59b3a9b0c32 SHA-256: f52caaece08c6326ce684343f5def45640c6d8886570cd5603e305160d511503
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded external links, identified as a 'PDF_SEO_LINK_FARM' heuristic. While the ML classifier strongly indicates maliciousness, the specific intent beyond link farming is unclear due to the lack of executable scripts or user-facing text. The URLs themselves are classified as benign, suggesting the maliciousness may stem from the sheer volume and nature of the links, potentially for SEO manipulation or as a distribution vector for other malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9903

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/3096096092094099/Long-Journey-Home-A-Guide-to-Your-Search-for-the-Meaning-of-Life-by-Os-Guinness.pdf
    • http://loaminoo.linkpc.net/3093094096091090/Long-Journey-Home-Longing-for-Home-4-by-Sarah-M-Eden.pdf
    • http://loaminoo.linkpc.net/4093093092093099/Magnificent-Obesity-My-Search-for-Wellness-Voice-and-Meaning-in-the-Second-Half-of-Life-by-Martha-M-Moravec.pdf
    • http://loaminoo.linkpc.net/7096094096098098/Long-Journey-Home-by-Sharlene-MacLaren.pdf
    • http://loaminoo.linkpc.net/1091094099090093/Long-Journey-Home-Stories-from-Black-History-by-Julius-Lester.pdf
    • http://loaminoo.linkpc.net/4091093096097093/Long-Journey-Home-Revisioning-the-Myth-of-Demeter-and-Persephone-for-Our-Time-by-Christine-Downing.pdf
    • http://loaminoo.linkpc.net/4092093096097092/Still-Points-North-One-Alaskan-Childhood-One-Grown-up-World-One-Long-Journey-Home-by-Leigh-Newman.pdf
    • http://loaminoo.linkpc.net/6090093090095094/Travels-with-Epicurus-A-Journey-to-a-Greek-Island-in-Search-of-a-Fulfilled-Life-by-Daniel-Klein.pdf
    • http://loaminoo.linkpc.net/1090099093097095/The-Path-to-Meaning-How-to-Align-Yourself-with-the-Universe-Make-Use-of-its-Hidden-Laws-and-Fill-Your-Life-with-Meaning-by-Agnes-Bodi.pdf
    • http://loaminoo.linkpc.net/7091097094098090/A-Short-Guide-to-a-Long-Life-by-David-B-Agus.pdf
    • http://loaminoo.linkpc.net/5090094098098097/Man-s-Search-for-Meaning-by-Viktor-E-Frankl.pdf
    • http://loaminoo.linkpc.net/3092099092091093/Man-s-Search-for-Meaning-by-Viktor-E-Frankl.pdf
    • http://loaminoo.linkpc.net/5098098097097/In-Search-Of-The-Excellent-Self-Personal-Health-And-Integrity-As-A-Guide-To-A-Life-Of-Choice-by-Carl-A-Flecker.pdf
    • http://loaminoo.linkpc.net/2092097091092094/The-Spirituality-of-Imperfection-Storytelling-and-the-Search-for-Meaning-by-Ernest-Kurtz.pdf
    • http://loaminoo.linkpc.net/7092092097094097/The-Ravenous-Brain-How-the-New-Science-of-Consciousness-Explains-Our-Insatiable-Search-for-Meaning-by-Daniel-Bor.pdf
    • http://loaminoo.linkpc.net/2090090097093/The-Male-Couple-s-Guide-Finding-a-Man-Making-a-Home-Building-a-Life-by-Eric-Marcus.pdf
    • http://loaminoo.linkpc.net/3091096090094092/The-Life-of-Tapa-My-Journey-with-a-Blue-Heeler-a-Guide-to-Healthier-Happier-Dogs-by-Annie-Horkan.pdf
    • http://loaminoo.linkpc.net/3092090098096096/Ageless-Soul-The-Lifelong-Journey-Toward-Meaning-and-Joy-by-Thomas-Moore.pdf
    • http://loaminoo.linkpc.net/4094091092090093/My-Life-with-Deth-Discovering-Meaning-in-a-Life-of-Rock-Roll-by-David-Ellefson.pdf
    • http://loaminoo.linkpc.net/2097096099094/A-Nest-for-Celeste-A-Story-About-Art-Inspiration-and-the-Meaning-of-Home-by-Henry-Cole.pdf
    • http://loaminoo.linkpc.net/4092093096097092/Still-Points-North-One-Alaskan-Childhood-One-Grown-up-World-One-Long-Journey-Home-by-Lei