Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a9c24a551f296f1…

MALICIOUS

PDF

28.0 KB Created: 2020-03-20 16:51:06 +00:00 Authoring application: mPDF 5.7
MD5: 942605a3bc83d9ee555270d252b11a93 SHA-1: b73c9a59c96fd0009970797743da96d126f622d2 SHA-256: 5a9c24a551f296f1eded255dd5182a65a6d261d546a4e516aa827679ca50296a
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to external PDF files on a suspicious domain, identified by the PDF_SEO_LINK_FARM heuristic. While no scripts were explicitly extracted, the structure suggests an attempt to manipulate search engine results or direct users to potentially malicious content. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9908

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://eascasas.myhome.cx/4aa9aa4aa7aa6aa6/A-Naturalist-at-Large-The-Best-Essays-of-Bernd-Heinrich-by-Bernd-Heinrich.pdf
    • http://eascasas.myhome.cx/8aa8aa8aa5aa9aa5/The-Trees-in-My-Forest-by-Bernd-Heinrich.pdf
    • http://eascasas.myhome.cx/2aa5aa0aa6aa7aa0/Why-We-Run-A-Natural-History-by-Bernd-Heinrich.pdf
    • http://eascasas.myhome.cx/8aa8aa8aa5aa9aa0/A-Year-in-the-Maine-Woods-by-Bernd-Heinrich.pdf
    • http://eascasas.myhome.cx/9aa2aa9aa0aa7aa2/The-Homing-Instinct-Meaning-and-Mystery-in-Animal-Migration-by-Bernd-Heinrich.pdf
    • http://eascasas.myhome.cx/9aa2aa9aa1aa5aa7/Racing-the-Antelope-What-Animals-Can-Teach-Us-About-Running-and-Life-by-Bernd-Heinrich.pdf
    • http://eascasas.myhome.cx/9aa6aa5aa0aa1aa8/Herzog-Aquitanien-Richard-Lowenherz-Heinrich-IV-Heinrich-V-John-of-Gaunt-1-Duke-of-Lancaster-Heinrich-VI-Eduard-III-Ludwig-VII-by-Quelle-Wikipedia.pdf
    • http://eascasas.myhome.cx/1aa1aa4aa5aa4aa9aa3/Heinrich-Schreyber-Aus-Erfurt-Genannt-Grammateus-Festschrift-Zum-500-Geburtstag-by-Heinrich-Schreiber.pdf
    • http://eascasas.myhome.cx/1aa0aa7aa7aa7aa9aa5/Vorbericht-Und-Inhaltsverzeichnis-Zu-Heinrich-Laubes-Gesammelten-Werken-In-F-nfzig-B-nden-by-Heinrich-Laube.pdf
    • http://eascasas.myhome.cx/9aa3aa9aa7aa7aa8/Sieben-Jahre-In-Tibet-Mit-Heinrich-Harrers-Rede-Vor-Der-Royal-Geographical-Society-2002-by-Heinrich-Harrer.pdf
    • http://eascasas.myhome.cx/8aa6aa9aa7aa0aa8/K-nig-Heinrich-der-vierte-Der-Zweyte-Theil-der-seinen-Tod-und-die-Cr-nung-von-Heinrich-dem-f-nften-enth-lt-by-William-Shakespeare.pdf
    • http://eascasas.myhome.cx/1aa1aa7aa3aa2aa3aa8/Einstein-s-Field-Equations-and-Their-Physical-Implications-Selected-Essays-in-Honour-of-J-rgen-Ehlers-by-Bernd-G-Schmidt.pdf
    • http://eascasas.myhome.cx/1aa1aa4aa9aa1aa9aa2/Der-Hexenhammer-Ein-Werk-zur-Legitimation-der-Hexenverfolgung-das-der-Dominikaner-Heinrich-Kramer-lat-Henricus-Institoris-im-Jahre-1486-ver-ffentlichte-by-Heinrich-Institoris.pdf
    • http://eascasas.myhome.cx/1aa1aa2aa5aa4aa9aa6/Der-Geitzige-Ein-Lustspiel-in-F-nf-Aufz-gen-Nach-Moliere-F-r-Die-Deutsche-B-hne-Von-Heinrich-Zschokke-by-Heinrich-Zschokke.pdf
    • http://eascasas.myhome.cx/1aa1aa6aa2aa7aa7aa5/Dr-Heinrich-M-llers-Weil-Seniors-Und-Superintendenten-Zu-Rostock-Kreuz--Buss--Und-Betschule-Wahrer-Christen-In-Zwei-Und-Zwanzig-Beitrachtungen-Der-Gemeine-Gottes-Zu-St-Marien-in-Den-ffentlichen-Betstunden-Vorgestellt-by-Heinrich-Muller.pdf
    • http://eascasas.myhome.cx/2aa6aa3aa9aa8aa7/The-Complete-Poems-of-Heinrich-Heine-A-Modern-English-Version-by-Heinrich-Heine.pdf
    • http://eascasas.myhome.cx/1aa1aa2aa5aa6aa7aa6/Heinrich-Zschokke-s-Novellen-Und-Dichtungen-Vol-9-of-15-by-Heinrich-Zschokke.pdf
    • http://eascasas.myhome.cx/9aa3aa3aa9aa3aa3/The-Prose-Writings-of-Heinrich-Heine-by-Heinrich-Heine.pdf
    • http://eascasas.myhome.cx/1aa1aa2aa5aa6aa3aa2/Heinrich-Zschokke-s-Novellen-Und-Dichtungen-Vol-9-of-15-by-Heinrich-Zschokke.pdf
    • http://eascasas.myhome.cx/8aa6aa3aa6aa8aa6/S-mtliche-Werke-Gedichte-Reisebilder-Dramen-Essays-Memoiren-Vollst-ndige-Ausgaben-Buch-der-Lieder-Deutschland---Ein-Winterm-rchen-Der-Doktor-in-Deutschland-by-Heinrich-Heine.pdf

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