Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7622bf71fa76c2f…

MALICIOUS

PDF

25.1 KB Created: 2019-05-07 09:26:46 +01:00 Authoring application: mPDF 5.7
MD5: b21cea19d6c347a7c875587c2c3d7332 SHA-1: 6ed1710ce11b8a2e3749635f54d6edf2cd276c08 SHA-256: e7622bf71fa76c2f8aecda1e16bdf457aac302f71733453db5e1f26d6a885799
90 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs, identified as a link farm. While the URLs themselves are currently marked as benign, the sheer volume and the heuristic firing 'PDF_SEO_LINK_FARM' suggest a malicious intent, likely to redirect users to malicious sites or for SEO manipulation. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted from this sample.

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/1090095093093094094/Zweisprachiges-Kinderbuch-in-Deutsch-und-Spanisch-Cham-leon---Camale-n-Mit-Spa-Spanisch-lernen-5-by-Pedro-P-ramo.pdf
    • http://loaminoo.linkpc.net/1090095093093094092/Zweisprachiges-Kinderbuch-in-Deutsch-und-Spanisch---Cham-leon---Camale-n-by-LingoLibros.pdf
    • http://loaminoo.linkpc.net/1090095093093095091/Zweisprachiges-Kinderbuch-in-Deutsch-und-T-rkisch-Cham-leon---Bukalemun---Die-Serie-zum-T-rkisch-Lernen-by-LingoLibros.pdf
    • http://loaminoo.linkpc.net/1090095093093094099/Zweisprachiges-Kinderbuch-in-Deutsch-und-Franz-sisch-Cham-leon---Cam-l-on-Mit-Spa-Franz-sisch-lernen-5-by-Colin-Hann.pdf
    • http://loaminoo.linkpc.net/1090093093096092098/Schlaf-gut-kleiner-Wolf-Sov-gott-lilla-vargen-Zweisprachiges-Kinderbuch-Deutsch-Schwedisch-www-childrens-books-bilingual-com-by-Ulrich-Renz.pdf
    • http://loaminoo.linkpc.net/1090095099098097091/Spanisch-In-30-Tagen-by-Jos-Mar-a-Dom-nguez.pdf
    • http://loaminoo.linkpc.net/1090096090091095092/Spanisch-in-30-Tagen-by-Elisabeth-Graf-Riemann.pdf
    • http://loaminoo.linkpc.net/1090096097096099093/Langenscheidts-Spanisch-f-rs-Gespr-ch-by-Alejandro-Aguirre-Fajardo.pdf
    • http://loaminoo.linkpc.net/6096098095094/Abangan-The-Best-Philippine-Komiks-2014-by-Rob-Cham.pdf
    • http://loaminoo.linkpc.net/1090094091090097095/Italienisch-lernen-im-Handumdrehen-Entspanne-dich-Du-kannst-jetzt-italienisch-lernen-by-Antonio-Libertino.pdf
    • http://loaminoo.linkpc.net/6098098096091092/Delfin-Glossar-Deutsch---Franz-sisch-Lehrwerk-f-r-Deutsch-als-Fremdsprache-by-Marie-Lys-Wilwerth-Guitard.pdf
    • http://loaminoo.linkpc.net/1091090094097094090/Leon-Degrelle-and-the-Rexist-Party-1935-1940-by-Leon-Degrelle.pdf
    • http://loaminoo.linkpc.net/1091098091091095096/Deutsch-Osterreichische-Beziehungen-Osterreichische-Identitat-Deutsch-Osterreichische-Zollunion-Osterreichische-Botschaft-in-Berlin-by-Quelle-Wikipedia.pdf
    • http://loaminoo.linkpc.net/1090097098095090097/Sam-der-Spaniel-Welpe---Allein-Zuhaus-in-der-Goldenen-Stadt-zweisprachiges-eBuch-12-by-Jutta-Mahlke.pdf
    • http://loaminoo.linkpc.net/1090095099097098094/Deutsch-in-30-Tagen-German-in-30-Days-Deutsch-in-30-Tagen-German-in-30-Days-Buch-mit-CD-by-Angelika-G-Beck.pdf
    • http://loaminoo.linkpc.net/5097092098094095/Alphonse-Daudet-by-Leon-Daudet-To-Which-Is-Added-the-Daudet-Family-by-L-on-Daudet.pdf
    • http://loaminoo.linkpc.net/1091097097097093092/Fachw-rterbuch-Der-Personalarbeit-Die-Wichtigsten-Fachbegriffe-In-Deutsch-Englisch-Englisch-Deutsch-Von-A-Bis-Z-Hans-Otto-Blaeser-by-Hans-Otto-Blaeser.pdf
    • http://loaminoo.linkpc.net/2092096097097094/Pedro-s-Journal-by-Pam-Conrad.pdf
    • http://loaminoo.linkpc.net/7092092096096093/Euros-09-by-Pedro-Usabiaga.pdf
    • http://loaminoo.linkpc.net/1091093093098091/While-I-Have-Pedro-by-John-Chesterman.pdf
    • http://loaminoo.linkpc.net/1090093093096092098/Schlaf-gut-kleiner-Wolf-Sov-gott-li

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