Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1c1b0badc901aee…

MALICIOUS

PDF

17.4 KB Created: 2019-04-30 04:46:13 +01:00 Authoring application: mPDF 5.7
MD5: c583e64ef0fa0c86a2cc59e1c024743e SHA-1: 8df8807a37f5bf77bae7262d5bcea87e90dbfdb5 SHA-256: b1c1b0badc901aee11de348f4b64292d449609e8956d61dd9a717a42161f0b72
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. While the specific URLs extracted are currently marked as benign, the sheer volume and structure suggest a malicious intent, likely for SEO manipulation or to redirect users to harmful sites. The ML classifier also flagged this PDF with high confidence. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9925

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/6090092094093091/Andr-e-s-Story-the-Complete-Record-of-His-Polar-Flight-1897-by-S-A-Andr-e.pdf
    • http://loaminoo.linkpc.net/1096098098096099/Lithochronos-Ou-Le-Premier-Vol-de-La-Pierre-Autour-de-Quinze-Photographies-D-Andree-Christensen-by-Andr-e-Christensen.pdf
    • http://loaminoo.linkpc.net/5098090096096094/Selected-Poems-of-Andree-Chedid-by-Andr-e-Chedid.pdf
    • http://loaminoo.linkpc.net/3093096090099092/Petunia-the-Girl-who-was-NOT-a-Princess-by-M-R-Nelson.pdf
    • http://loaminoo.linkpc.net/6090095096096/The-Complete-Princess-Trilogy-Princess-Princess-Sultana-s-Daughters-and-Princess-Sultana-s-Circle-by-Jean-Sasson.pdf
    • http://loaminoo.linkpc.net/2095091090095091/Princess-of-Egypt-An-Egyptian-Girl-s-Diary-1490-BC-by-Vince-Cross.pdf
    • http://loaminoo.linkpc.net/4092092095097096/Pandas-on-the-Eastside-by-Gabrielle-Prendergast.pdf
    • http://loaminoo.linkpc.net/4099096096090094/The-Ambient-Century-by-Mark-Prendergast.pdf
    • http://loaminoo.linkpc.net/4094095091092097/Paris-and-the-Nineteenth-Century-by-Christopher-Prendergast.pdf
    • http://loaminoo.linkpc.net/6098098098096090/Caraboo-the-servant-girl-princess-the-real-story-of-the-grand-hoax-by-Jennifer-Raison.pdf
    • http://loaminoo.linkpc.net/1091090097094097091/The-Ambient-Century-From-Mahler-to-Trance-The-Evolution-of-Sound-in-the-Electronic-Age-by-Mark-Prendergast.pdf
    • http://loaminoo.linkpc.net/4096098099097093/The-Princess-in-Black-and-the-Perfect-Princess-Party-The-Princess-in-Black-2-by-Shannon-Hale.pdf
    • http://loaminoo.linkpc.net/6092099091099097/Going-for-a-Sea-Bath-by-Andr-e-Poulin.pdf
    • http://loaminoo.linkpc.net/6090092094090094/Dance-by-Andree-Grau.pdf
    • http://loaminoo.linkpc.net/6090092094098098/Balenciaga-by-Marie-Andr-e-Jouve.pdf
    • http://loaminoo.linkpc.net/6090092097093096/366-and-More-Wonders-of-the-World-by-Andree-Bertino.pdf
    • http://loaminoo.linkpc.net/6092099093091091/The-Magic-Clothesline-by-Andr-e-Poulin.pdf
    • http://loaminoo.linkpc.net/6090092094093096/When-the-Anger-Ogre-Visits-by-Andree-Salom.pdf
    • http://loaminoo.linkpc.net/5099095090093092/Lygaya-l-enfant-esclave-by-Andr-e-Paule-Mignot.pdf
    • http://loaminoo.linkpc.net/6090092097093094/Andr-e-Putman-Ambassadrice-du-style-by-Mich-le-Champenois.pdf

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