Malicious PDF — malware analysis report

Static analysis result for SHA-256 41c7f6dba9fb4971…

MALICIOUS

PDF

17.2 KB Created: 2019-04-30 05:46:26 +01:00 Authoring application: mPDF 5.7
MD5: a6afa15d9c390ba71a26583ab185c231 SHA-1: eb3ef3d8cd7103149bded7b445d4d59605f272d8 SHA-256: 41c7f6dba9fb4971242bb9331552b4d4ec62f3ad867c7f6164cada1b2e461a1f
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded URLs, as indicated by the PDF_SEO_LINK_FARM heuristic. The ML classifier also flagged this PDF as malicious with high confidence. While the URLs themselves are currently marked as benign, the sheer volume and the heuristic firing suggest a malicious intent, likely to direct users to potentially harmful content or for SEO spam. 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/3099095096092091/Death-in-Florence-The-Medici-Savonarola-and-the-Battle-for-the-Soul-of-a-Renaissance-City-by-Paul-Strathern.pdf
    • http://loaminoo.linkpc.net/1090095097098098091/The-Renaissance-of-Lorenzo-de-Medici-by-Charles-L-Mee-Jr-.pdf
    • http://loaminoo.linkpc.net/1096097093090091/Sin-in-the-Second-City-Madams-Ministers-Playboys-and-the-Battle-for-America-s-Soul-by-Karen-Abbott.pdf
    • http://loaminoo.linkpc.net/2097099099091099/Ladies-and-Gentlemen-the-Bronx-is-Burning-1977-Baseball-Politics-and-the-Battle-for-the-Soul-of-a-City-by-Jonathan-Mahler.pdf
    • http://loaminoo.linkpc.net/9090098094092093/Cosimo-de-Medici-and-the-Florentine-Renaissance-The-Patron-s-Oeuvre-by-Dale-Kent.pdf
    • http://loaminoo.linkpc.net/5095093093098095/Renaissance-Florence-by-Gene-A-Brucker.pdf
    • http://loaminoo.linkpc.net/3090098090099092/Batman-Death-and-the-City-by-Paul-Dini.pdf
    • http://loaminoo.linkpc.net/9094094098093094/Florence-amp-Baghdad-Renaissance-Art-and-Arab-Science-by-Hans-Belting.pdf
    • http://loaminoo.linkpc.net/7097093096097091/Spinoza-in-90-Minutes-by-Paul-Strathern.pdf
    • http://loaminoo.linkpc.net/1091090099091099097/St-Augustine-in-90-Minutes-by-Paul-Strathern.pdf
    • http://loaminoo.linkpc.net/4094096099094094/Mendeleyev-s-Dream-by-Paul-Strathern.pdf
    • http://loaminoo.linkpc.net/5098097094096098/Plato-in-90-Minutes-by-Paul-Strathern.pdf
    • http://loaminoo.linkpc.net/5093095090096091/Rousseau-in-90-Minutes-by-Paul-Strathern.pdf
    • http://loaminoo.linkpc.net/5092096095095099/Machiavelli-in-90-Minutes-by-Paul-Strathern.pdf
    • http://loaminoo.linkpc.net/7094090098094091/Aristotle-in-90-Minutes-by-Paul-Strathern.pdf
    • http://loaminoo.linkpc.net/5099090093095090/Kafka-in-90-Minutes-by-Paul-Strathern.pdf
    • http://loaminoo.linkpc.net/1090099099090090094/Oppenheimer-And-The-Bomb-by-Paul-Strathern.pdf
    • http://loaminoo.linkpc.net/5096098098097096/Marx-in-90-Minutes-by-Paul-Strathern.pdf
    • http://loaminoo.linkpc.net/1091093091097093/A-Season-In-Abyssinia-An-Impersonation-by-Paul-Strathern.pdf
    • http://loaminoo.linkpc.net/1096097092095099/Heart-and-Soul-The-Story-of-Florence-Nightingale-by-Gena-K-Gorrell.pdf
    • http://loaminoo.linkpc.net/9090098094092093/Cosimo-de-Medici-and-the-Florentine-Renaissance-The-Patron-s-Oeuvre-by-Da

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